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Ashwagandha

Ashwagandha is a popular Ayurvedic adaptogen that is thought to increase vitality and strength, and level out your mood with its de-stressing effects (1).

In fact, one study saw a reduction in morning cortisol levels of healthy adults who took ashwagandha daily (1).

Cortisol is the pesky hormone that is released when you’re stressed, and too much can cause things like weight gain, and disrupt your sleep.

So, could ashwagandha be the answer to mood-balancing, stress-free days? And is it even safe to take during pregnancy? Let’s find out.

What is ashwagandha?

Ashwagandha is an evergreen shrub, Withania somnifera, that grows in India, the Middle East, and Africa. It is also called “Indian Winter Cherry” or “Indian Ginseng” and belongs to the nightshade family like eggplants.

Its root is said to smell like a horse and is available in powder form (2).

Ayurveda is a system of natural medicine that originated in India thousands of years ago. It’s believed that bodily imbalances and stress are the cause of disease, and Ayurveda incorporates certain lifestyle interventions and natural therapies to help you re-balance.

Is ashwagandha safe during pregnancy?

In a study done with pregnant rats, researchers observed no toxicity effect on the mother or the developing fetus at levels up to 2000 mg/kg/day (3).

If you have come across certain “mommy blogs” talking about the positive effects of ashwagandha during pregnancy, tread lightly. These mother-to-mother support systems are helpful in some ways, but should not be taken as the word when it comes to YOUR pregnancy.

When it comes to the safety of herbs and other natural remedies, it is best to speak with your doctor regarding your personal circumstances. Many medical professionals caution against taking ashwagandha while pregnant as it may induce a miscarriage at high doses (4, 5).

Those with thyroid imbalances should take extra precautions since ashwagandha may worsen symptoms (6).

While there isn’t much research on ashwagandha and pregnancy, there is some research done on the effects it has on stress, and even on cancer, in animal and human studies (7).

Nutrition breakdown

100 g Ashwagandha Powder

  • Calories: 45 calories
  • Carbohydrates: 10 g
  • Sugar: 0 g
  • Fat: 0 g
  • Protein: 1 g
  • Fiber: 0 g
  • Potassium: 282 mg
  • Calcium: 32 mg
  • Iron: 0.31 mg
  • Phosphorus: 20 mg
  • Niacin: 0.4 mg

All values provided by USDA nutrient database.

Are there benefits to consuming ashwagandha while pregnant?

As mentioned earlier, there is not a lot of research on ashwagandha and pregnancy, but there are studies showing positive effects in rats and healthy humans (8, 9).

A few different articles reviewed the current literature published testing ashwagandha and its role in cancer prevention. 

What they saw across these studies was that withanolides (naturally occurring compounds in ashwagandha that have been used for 3000 years in traditional Ayurvedic practice for its pharmacologic effects) can debilitate the inflammatory response and certain enzymes involved in the metastatic progression of cancer (10, 11).

The most popular and widely seen reason for supplementing with ashwagandha is for its stress-reducing properties. 

In this study, healthy adults consumed 300 mg of ashwagandha powder in capsule form for 60 days, and the researchers saw a 27.9% reduction in cortisol levels on day 60 compared to day 0 (12)!

Stress (and having increased levels of cortisol circulating through your body) can increase your heart rate, make you prone to headaches or digestive problems, cause sleeplessness, and weight gain.

Can ashwagandha boost male fertility?

What’s interesting is that quite a few studies have been completed on ashwagandha for men.

A study completed in 2009 showed that men who took 5 mg/day of ashwagandha root powder for 3 months had less stress and improved semen quality (13).

Three other studies also showed significant improvements in male fertility with ashwagandha supplementation (14, 15, 16).

Are there potential side effects?

A literature review of 69 human studies reported no serious adverse effects of oral ashwagandha intake (17). There were some minor and mild effects, like abdominal discomfort and drowsiness, for these were minimal and did not last.

In addition to those findings, they also saw that no toxicity effects were present months after consuming this adaptogen.

However, keep in mind, these results were from non-pregnant individuals.

Is ashwagandha safe during postpartum and breastfeeding?

Studies in adults, not specific to postpartum, have found ashwagandha to be generally safe (18). Serious adverse side effects are overall rare (18, 22). This suggests that for a postpartum individual who is not breastfeeding, ashwagandha’s safety profile would likely be similar to that of the general adult population.

Traditionally, ashwagandha has been used postpartum worldwide in Ayurvedic medicine for its adaptogenic effects (19). It is thought to provide a sense of calm, boost energy levels, and help alleviate sleep disturbances.

Unfortunately, its consumption during breastfeeding is a gray area.

There is no data on the safety of taking ashwagandha during lactation and its level of transfer into breast milk (19). Larger health institutions, such as the National Institutes of Health (NIH), recommend avoiding it during breastfeeding due to a lack of data (18, 19, 21). Some herbalists and integrative practitioners consider it a safe herb for breastfeeding due to a lack of data pointing to contraindications or adverse effects during this time. Even so, some recommend waiting until the nursing infant is at least 12 weeks old.

Also, note that supplements can vary widely in quality. We always recommend sticking with third-party tested options. Further Food is a quality brand that offers premium ashwagandha (discount code: RYANN18).

Are there benefits to consuming ashwagandha during postpartum and breastfeeding?

Research in the general population suggests that ashwagandha may help reduce stress and anxiety and support improved sleep and energy levels (20). These potential benefits could all be helpful for postpartum, especially those experiencing stress and sleepless nights.

There is no specific research on ashwagandha for postpartum anxiety and depression. However, research in the general population has found that ashwagandha may help reduce mild to moderate symptoms of anxiety and depression (22, 23).

How can I use ashwagandha?

Ashwagandha is commonly blended into smoothies or other hot drinks to enjoy.

You can drink your adaptogenic beverage at any time of the day, though with the potential sleepy side effects mentioned earlier, you may want to try it at night.

Without altering the taste, you can even sprinkle it into the food you make,  as long as you use less than a teaspoon of ashwagandha powder.

Alternatively, you (or your partner) can take it in capsule form while trying to conceive, if okayed by your physician.

The Bottom Line

  1. Since there are very few studies looking into ashwagandha while pregnant, you may want to wait to try out this trendy adaptogen until after your baby is born.
  2. Ashwagandha has been around and used for many years in Ayurvedic medicine, and could be a potentially positive herb to add to your daily routine.
  3. If you are interested in the anti-stress effects, know that there are many other ways to reduce stress, like exercising, meditation, talking and laughing with loved ones, or doing some of your favorite activities.
  4. There are some promising results for male fertility, but no significant results for female fertility, unfortunately.
  5. Ashwagandha may support stress, sleep, and energy during postpartum. Still, due to a lack of safety data and unclear transfer into breast milk, it’s generally not recommended during breastfeeding, especially before 12 weeks postpartum.
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Copper

When you think about copper, you might think of copper pans and pennies before you consider its role in the diet. What makes this mineral so important for pregnancy? 

Let’s see what the research has to say about copper for pregnancy!

What is copper?

Copper is an essential mineral. That means it is one of 13 minerals that our bodies need for growth and development. Copper is involved in systems and processes all throughout our bodies, and has many roles in different organs (1).  

Did you know copper is present in every single tissue in your body (1)?   This means it’s abundant within a developing baby’s body as well. Let’s talk more about the many roles of copper and where we can find it in the diet.

What does copper do?

Copper is naturally present in some foods and is available as a dietary supplement, though one is not needed or recommended if you are eating a wide variety of foods containing copper.

Copper is involved in everything from gene expression and brain development to immunity, as well as iron absorption and use in the body (2). Copper increases the release of iron from where it is stored in the liver and spleen, which is an important function in preventing anemia (2). 

Copper supports normal blood clotting processes and regulates our blood pressure (2). It also supports collagen production and is in our tissues all throughout our body (2). Copper helps prevent cell damage and helps us use the energy we get from food, and regulates our hormones  (1).

Not getting enough copper can negatively impact cholesterol and glucose metabolism, blood pressure, cardiovascular system, bone health, and immunity (2).

As you can see, copper plays a role in every system in the body! But what is copper’s significance in pregnancy?

Why is copper important for pregnancy?

Copper plays a role in every organ system throughout the body! In pregnancy, copper can help with:

Trying to conceive

Though studies on the impact of copper on fertility at this time are limited, copper has been found to be in significantly lower concentrations among women with infertility when  compared to fertile women (3). Copper concentrations have also been found to be slightly lower in women with secondary infertility problems (3). Maintaining an adequate intake of copper in your diet may help support your health when trying to conceive.

As we will discuss in a minute, it’s also important to maintain sufficient copper stores in the body before conceiving since it plays vital roles in early baby development!

Preventing anemia 

During pregnancy, copper is especially important for helping prevent anemia. As we saw earlier, one of its roles is helping us absorb iron. During pregnancy, the body requires an increased amount of iron for creating hemoglobin, the red blood cell protein which transports oxygen to tissues and to your baby (4).

Higher iron demand and consumption means more copper is needed to meet these demands and help your body absorb and use iron effectively! 

Growth and development

Getting enough copper in pregnancy is important to support new developing tissues in your body, as well as your baby’s body. It is also needed for supporting fetal growth and the lung, skin, bones, and immune systems (4), (5). Therefore, it’s important to make sure you’re getting enough copper in your diet to support early fetal development, which starts weeks even before you realize you’re pregnant!

Brain health

In the brain, copper plays a significant role in supporting normal development, especially in a growing baby, when the brain is being formed (6). Not getting enough copper can affect functioning and increase risk of neurological diseases (6).

Immune system support

Copper plays a critical role in maintaining a healthy immune system and in preventing infection (1). This is especially important in pregnancy, as your immune system is suppressed during this time. 

Copper supports the functioning of your immune cells such as T helper cells, B cells, neutrophils, natural killer cells, and macrophages (7). These cells are all responsible for killing infectious microbes that enter your body. 

Copper is also able to kill many infectious viruses, including bronchitis, polio, HIV, and many other DNA and RNA-related viruses (7). Copper deficiency is linked to having an increased vulnerability to infections, since it can lead to decreased numbers and reduced functioning of cells in the immune system (7). 

An amazing antimicrobial 

Copper is not only effective in killing many different disease-causing organisms inside our bodies, but also on the outside! Copper kills bacteria, fungi, and viruses, including MRSA and VRE, on surfaces (8). This means copper surfaces, like a copper faucet, can kill these and most other germs and viruses upon contact! (8)

Copper exposure is also correlated with improved wound healing, due to its capabilities to facilitate the formation of new blood vessels (9) .

*The possibilities of copper being used specifically in the field of obstetrics and gynecology due to these antimicrobial and wound-healing benefits (such as copper pads being used after childbirth delivery) are currently being studied, though further research is needed!*  (9)     

How much copper do I need?

The RDA for copper between ages 14-18 is 890 mcg and 1000 mcg if pregnant and breastfeeding. If you are over 19 years old, the RDA is 900 mcg, and it’s recommended you consume at least 1300 mcg if pregnant and/or breastfeeding (1).

Though there is an increased need for copper, taking a copper supplement is not recommended when pregnant. If you are concerned you may not be getting enough copper, it’s best to work on eating more foods that are high in copper instead.

Could I be deficient in copper?

Severe copper deficiencies are uncommon, but can occur in cases of malnutrition, or a lack of consumption of foods that are rich in copper (1). 

Copper deficiency can also occur if excessive supplements of zinc and iron are taken (1). This is because copper is used to break down iron in the body and more is needed if more iron is taken, and zinc tends to be prioritized for absorption in the stomach before copper. 

Most prenatal vitamins don’t contain a ton of zinc, so it is unlikely you are overdoing zinc by taking a prenatal vitamin alone.  

Is copper important for postpartum and breastfeeding?

Copper has not been well-studied in relation to postpartum and breastfeeding. Still, given its role in preventing anemia and helping our bodies absorb iron, we can also assume its importance in preventing postpartum anemia (11). 

Copper is also significant for immune support and is associated with improved wound healing and facilitation of new blood vessel formation, which are significant benefits to support your health and healing after giving birth (12, 13). 

How much do I need? 

The RDA for copper while breastfeeding is 1.3 mg/day, a little higher than the recommended amount during pregnancy. 

Where can I find copper?

Some foods that are rich in copper sources include: shellfish, seeds and nuts, beans, dairy, organ meats, whole-grains, and chocolate (1) (yes, another reason to continue enjoying your dark or unsweetened chocolate during pregnancy!). 

Sources of copper in your diet (from most to least) are (1):

  • Beef liver
  • Oysters
  • Unsweetened baking chocolate
  • Potatoes with skin
  • Shiitake mushrooms
  • Cashews
  • Crab
  • Toasted sunflower kernels (the inner “meat” of sunflower seeds)
  • Turkey giblets
  • Dark chocolate, dark
  • Tofu
  • Chickpeas
  • Salmon
  • Whole wheat pasta
  • Avocado
  • Dried figs
  • Spinach
  • Asparagus

Can I get too much copper?

Copper toxicity is rare, especially if you’re healthy and living in a Western country, and when toxicity occurs, it is more commonly due to a contaminated water source (10).

However, chronic exposures to high levels of copper can result in liver damage and gastrointestinal symptoms (such as stomach pain, cramps, nausea, diarrhea, and vomiting) (10). Copper toxicity occurs very rarely in healthy individuals who do not have a hereditary copper homeostasis defect (10).

The recommended upper limit of consumption is 8,000 mcg for ages 14-18, and 10,000 mcg for ages 19 and older (1) .

Copper and gestational diabetes

Some recent studies have found significant associations between excessive copper and impaired glucose metabolism. However, the current evidence establishing a correlational relationship between high copper levels and gestational diabetes mellitus are too limited to draw any definitive conclusions at this time (11).

What about copper pans?

When using copper in the kitchen, it’s important to distinguish between the two types: uncoated copper vs. coated copper. Solid, uncoated copper pots are esteemed for their abilities to conduct heat more efficiently, which ensures even heat distribution when cooking. 

Let’s talk about how this can be problematic: 

  • Uncoated: copper pots, cooking ware, drinking vessels, and storage containers can be dangerous because the copper molecules can seep into your food when cooking it, or when acidic foods break down copper and draw it into the food (10). This could lead to accidental over-ingestion of copper, which could cause copper toxicity. 
  • Coated: copper is lined inside with protective metals, including tin and stainless steel. The lining acts as a barrier to keep copper from seeping into your food. It’s important to note that the coating can become scratched or worn away over time with use, which means you will have to have them relined or replaced. To protect and maintain this barrier, use wooden spoons and spatulas to avoid scratching away at the coating.


The Bottom Line

  1. Copper is present in every organ system and tissue throughout the body, and is involved in functions including supporting heart health, immunity, promoting growth and development, brain health, and preventing anemia. 
  2. Foods rich in copper include: shellfish, seeds and nuts, beans, dairy, organ meats, whole-grains, and unsweetened and dark chocolate. 
  3. Copper pots and pans can cause copper toxicity if they are unlined, but are safe to use if coated with a protective surface inside. Use wooden spoons to avoid scratching off the coating, and replace copper pans once the barrier wears off.

Written by: Claire Gilmore, MSCN, CNS, LDN

Reviewed/edited by: Ryann Kipping, MPH, RDN, CLEC, Owner + Founder

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Goji Berries

What are Goji Berries? 

  • Goji berries are tiny red fruits similar to raisins when dried
  • People eat them as a snack, in teas, smoothies, cereal, or supplements
  • They are popular because they contain vitamins, minerals, fiber, and antioxidants, which are substances that help protect your cells from damage (1, 1.1)

Goji berries are usually found in Asia, particularly in the northwest regions of China (2). For thousands of years, they have been traditionally used in Chinese medicine, but are gaining in popularity in the U.S. due to claims of high antioxidant content and potential health benefits.

Are Goji Berries Safe For Pregnancy? 

There are very few clinical studies specifically evaluating goji berry intake during pregnancy, so no definitive conclusions can be drawn about its effects.  

Animal and laboratory studies (3) suggest potential effects, including:

  • Protection against oxidative stress
  • Immune modulation
  • Increased insulin sensitivity
  • Antioxidant activity

However, these findings cannot be directly applied to human pregnancy safety due to the lack of research.

That said, one practical upper limit is about 1 tablespoon (15 grams) per day, not as a long-term “staple.”

Why Caution Is Often Recommended

Goji berries naturally contain betaine, a plant compound that supports liver function, cellular hydration, and methylation processes in the body (4). 

Betaine itself is not inherently harmful. In many contexts, it may even provide benefits such as supporting metabolic health and reducing oxidative stress. 

However, caution is recommended during pregnancy because some traditional Chinese herbal medicine sources (5) suggest that certain compounds in goji berries, including betaine, are associated with induced menstrual flow and vaginal contractions. 

Although there are no current human studies suggesting this correlation, we want to exercise caution and limit our goji berry consumption during pregnancy – just in case.   Eating small amounts of dried goji berries occasionally (for example, as a topping on a smoothie bowl, yogurt, or oatmeal) is safe, but regularly consuming large amounts or concentrated supplements is not advisable until more research is available.

Potential Risks and Drug Interactions to Consider

Goji berries may interact with certain medications, such as anticoagulants, like Warfarin (6). If you are currently on Warfarin or taking any other anticoagulant medication, we recommend erring on the side of caution by abstaining from goji berries.

Can I eat them while trying to conceive or postpartum?

Yes, there are no contraindications to consuming goji berries before or after pregnancy.

Nutrient Profile of Goji Berries (1 tbsp) (7) 

  • Calories: 19.6 kcal
  • Carbs: 4.32 g
  • Fiber: 0.72 g
  • Protein: 0.8 g
  • Calcium: 10.64 mg
  • Iron: 0.4 mg
  • Potassium
  • Vitamin A: 450 mcg (50% of the DV)
  • Vitamin C: 2.72 mg

What are the Benefits of Eating Goji Berries?  

High in vitamin A (beta-carotene)

Goji berries are rich in beta-carotene, a precursor to vitamin A that supports your baby’s development, including the eyes, limbs, heart, and immune system, while also helping maintain your own vision, tissues, and immune health during pregnancy (9). Unlike retinol, beta-carotene is not the preformed vitamin A that can be problematic in pregnancy.

Good source of vitamin C 

Goji berries have vitamin C, which is essential during pregnancy. It supports immune function, boosts iron absorption, protects our cells from damage, and is linked to healthier birth outcomes (11). 

Fiber-rich

Goji berries, like many other fruits, contain fiber. Fiber can promote regular bowel movements, helping prevent constipation and preeclampsia (12). Fiber also helps keep us fuller for longer, regulates blood sugar, and supports healthy gut bacteria (13). 

High in antioxidants

Goji berries contain several types of antioxidants that work together to protect our cells from harmful damage, fight inflammation, and support and strengthen our immune systems during and after pregnancy (14). 

Goji Berries vs. Other Berries 

Goji berries are often called a “superfood,” but how do they actually compare to other common berries like blueberries, strawberries, and raspberries?

Compared with blueberries, strawberries, and raspberries, their main standout is vitamin A. Most other types of berries provide minimal vitamin A, so that is what makes goji berries unique. 

Other berries shine in different ways. Strawberries and blueberries tend to provide more vitamin C, which supports immunity and iron absorption, while raspberries and blackberries are especially rich in fiber to support digestion and help with constipation (13).

Ways to Include Goji Berries in Your Diet

If you really love goji berries, or they are popularly grown/available where you live, they are very easy to add to your diet, and can be used like other berries!

  • Blend into smoothies
  • Add to oatmeal or yogurt for a slightly sweet, chewy topping
  • Mix into a trail mix with nuts, seeds, and dark chocolate
  • Sprinkle on salads for a pop of color and natural sweetness
  • Stir into baked goods like muffins, granola bars, or energy bites
  • Steep in hot water or tea to soften them and create a mild goji berry tea

Written by: Lydia Bodi, Dietetic Intern, and Ryann Kipping, MPH, RDN, LDN

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Maca

You may have heard of maca recently, the hottest food trend for people on a fertility-boosting journey.

It’s touted to have a multitude of benefits, especially in the reproductive realm. But is maca safe during pregnancy or just another unproven trendy “health’ powder? We’ve got all the details on Maca during pregnancy below.

What is maca?

Maca is a native root plant from Peru. It is a cruciferous vegetable, like broccoli and cauliflower. It is often available in powder form, and many people report the taste as nutty.

There are three types of maca: red, yellow, and black. Different types of maca have different effects: black maca is more effective for men’s sperm production, motility, and semen volume (1). 

If you read into the details of maca, it’s traditionally used to enhance fertility and is also said to improve energy and mood (2). 

Most individuals who take maca powder blend it in their smoothies daily. However, other uses traditionally have included making it into teas and adding it to oatmeal, soups, and stews (3). 

While there isn’t much research on maca during pregnancy, there is some research on maca and fertility. However, the amount of research done with maca, in general, is quite limited and typically uses animals or human males as research subjects or perimenopausal women.

Can Maca help you get pregnant?

Research for maca and fertility outcomes

Regarding women’s fertility, the research is scant and very inconclusive.

Many more studies and evidence support the use of maca for male fertility. Overall, maca has been found to improve semen parameters in men through increased sperm production and motility (3).

No studies have found it to have much effect on women’s hormones before menopause, and even fewer have studied it regarding pregnancy or conception. 

Are there other benefits to consuming maca outside of pregnancy?

In minimal studies, maca was thought to potentially be able to support menopausal symptom treatment (4, 5). In one treatment, maca reduced the frequency and severity of individual menopausal symptoms, making it a natural alternative to Hormone Replacement Therapy (HRT) (6). In another study, maca reduced anxiety and depression in postmenopausal women (7). 

Though these are not conclusive and research at this time is limited, maca does seem to have positive effects for those in the peri or postmenopausal stages for helping to manage symptoms at these stages. 

Is maca safe during pregnancy?

The research needs to be more varied and plentiful.

In short, we don’t know. Since there is no sound scientific evidence or substantiated claim regarding maca consumption during pregnancy, most professionals do not recommend consuming maca or any other unregulated or unknown supplement (8).

We just don’t know if or how it could affect your baby.

Maca nutrition breakdown

1 Tablespoon Maca Powder (x):

  • Calories: 30 calories
  • Carbohydrates: 6 g
  • Sugar: 4 g
  • Fat: 0 g
  • Protein: 1 g
  • Fiber: 2 g
  • Potassium: 130 mg
  • Calcium: 20 mg
  • Iron: 0.4 mg

Are there benefits to consuming maca while pregnant?

Maca is considered an adaptogen, meaning it helps your body adapt to stress. Adaptogens are trendy right now, so it makes sense maca is also part of this conversation.

While it’s fun and exciting, and possibly good for you to incorporate these adaptogens into your diet, again, there is little to no scientific research indicating that they’re safe for pregnant women.

The Botanical Safety Handbook sees “no identified problems for use during pregnancy or breastfeeding” for several adaptogens, including maca (9). However, a lack of evidence does not necessarily signify it is pregnancy safe. 

Are there potential side effects?

According to multiple research sources related to maca consumption, no adverse or toxic levels are reported in animal or human trials.

However, professionals still caution about the utilization and dosage since each individual can react differently.

As previously stated, there is no research on using maca during pregnancy or maca root while pregnant. The potential for adverse side effects or birth outcomes is unknown.

Since we know it can potentially affect hormones, it may be best to avoid it if you have or have had conditions related to hormone imbalances related to estrogens, such as endometriosis, breast cancer, or fibroids, or if any of these runs in your family. It may also be best to avoid maca if you have a thyroid condition (since this impacts your hormones), and talk to a professional knowledgeable about your history and herbs like maca if you want to use it. 

Avoid maca if you are currently pregnant or breastfeeding. 

If I include maca in my diet, which product should I buy? 

If you would like to include maca in your diet while trying to conceive or during postpartum and beyond, here are a few recommendations while shopping for maca and which ones we recommend. 

Gelatinized (also known as “activated maca” vs. raw maca: Gelatinisation is a cooking process that helps make maca safer to consume, giving us more potential health benefits from the maca. 

While raw maca has some higher amounts of more bioavailable compounds (such as fatty acids and enzymes destroyed during heating), raw maca is much more susceptible to growing mold. It cannot be stored for long periods.

The mold that can grow on raw maca can adversely affect your gut and entire body, and is known to taste sweeter than raw maca. The safest form of maca is commercially called gelatinized or activated maca, which has gone through high-pressure steam to kill the mold and sanitize it.

Due to the removal of the starch, the activated maca powder contains nutrients that are better absorbed and more readily available. One study found that these nutrients were best absorbed in the cooked form in a study observing the growth of mice (10). 

In addition to choosing gelatinized maca, choose organic maca to avoid pesticides if possible.

Some Maca recommendations:

How much maca is okay to consume?

Start with 1 teaspoon daily, in tea, smoothie, soup, or yogurt. Consume maca within recommended serving sizes and do not exceed these daily serving recommendations. 

The Bottom Line

  1. Maca has shown some positive effects in studies on women trying to conceive but is more beneficial for men’s fertility overall. Outside of pregnancy, maca can help boost energy and libido and support women in managing their symptoms in the postmenopausal period. 
  2. It is generally not recommended to start any herbal supplement, including maca, while pregnant or breastfeeding and to discuss with your doctor or midwife if you do.
  3. Overall, the number of studies done and the number of women in the studies are so few that more research needs to be done before it’s safe to say that maca is something that can be incorporated into your and your growing baby’s diet.
  4. Avoid maca if you have or have had hormone imbalances and conditions related to estrogen in the past or present, such as endometriosis or breast cancer, or if these run in your family. It may also be best to avoid maca if you have a thyroid condition. 
  5. If you are not pregnant and would like to include maca, buy organic, gelatinized maca to reduce the risk of mold and increase nutrient absorption. 

Written by: Alessandra D’Orazio, MS, RDN 

Reviewed/edited by: Ryann Kipping, MPH, RDN, LDN, and Claire Gilmore, MSCN, CNS, LDN

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Nutrition after Miscarriage

Healing after pregnancy loss guide

Undergoing a miscarriage can be devastating. Continuing the activities you love and staying connected to the people you love will be important during this difficult time. Seeking mental health services can be helpful as you navigate this storm as well. When you are ready to try conceiving again, be sure to talk to your care team for recommendations tailored to your needs.

Miscarriage is still misunderstood, and there is often no way of knowing what exactly caused it. Much research has been done on potentially influential factors and correlations between some components and pregnancy loss, but more research is always needed.

When preparing nutritionally for another pregnancy after miscarriage, it’s not entirely different than nutrition when preparing for pregnancy or nutrition during pregnancy.How should I eat after pregnancy loss?

It can often be difficult to eat during a time of grieving, let alone find the motivation to cook or eat with nourishment in mind. If you are able to have a spouse, other family member(s), or any friends who ask how they can help prepare any of these for you, that is ideal. The below information is very in-depth and not meant to overwhelm you but to empower you with actionable steps you can take on a daily basis. Start with any one small change.  

In general, focus on… 

Eating for blood sugar balance

A large body of research has found associations between recurrent pregnancy loss and insulin resistance (1, 2). A recent systematic review and meta-analysis also found a relationship between abnormal glucose metabolism tests and a history of recurrent pregnancy loss (3). 

In general, you can do this by prioritizing protein, fat, and fiber intake at meals with at least 30 grams of protein each meal and half a plate of non-starchy veggies plus at least a few fats, eating mostly whole animal foods, and limiting processed foods with regular forms of movement and weight resistance daily. 

Read here for (much) more on how to live a lifestyle supporting blood sugar balance, especially during TTC or for a future pregnancy. 

Foods for physical and emotional healing

High-protein animal foods are the most nutrient-dense and healing-supportive food, especially organ meats, meat on the bone, seafood (particularly fatty fish and oysters), eggs, and full-fat dairy. Bone marrow is also rich in healthy fats, B vitamins, collagen, and collagens called glycosaminoglycans, which reduce inflammation and help heal tissues (4). It’s simple to prepare in roasts or by roasting in the oven like this.  

These are the best sources of bioavailable nutrients, especially those that are essential for tissue repair and replenishment after blood loss, such as protein, collagen, B vitamins, iron, and zinc. 

Other healing foods include fats such as butter, ghee, full-fat dairy, coconut oil, and fatty meats such as bacon. It’s also ideal for daily eating a wide variety of veggies, especially leafy greens and cruciferous veggies. 

Though getting enough nutrients to support physical healing is a priority during this time, so is eating for mental well-being. Incorporate any foods you enjoy that make you feel better emotionally. These might be foods that aren’t necessarily rich in nutrients (i.e., sweet treats) but can absolutely be incorporated in a healthy way, especially when enjoyed after a nutritious meal with people you love. 

Foods for gut health

Gut health is a key foundation for overall health and can be a possible contributor to pregnancy loss. Having enough beneficial bacteria in the gut is critical for regulating estrogen and progesterone levels (5). 

Additionally, gut infections and increased intestinal permeability (aka, leaky gut) create a constant level of inflammation in the body, which many studies have found as a strong risk factor for pregnancy loss (6). Addressing the root causes of a leaky gut, including food sensitivities, stress, unhealthy eating habits, or a history of antibiotics, is key to healing it (7). 

Gut microbiota also impacts the availability of essential micronutrients for the thyroid, including Iodine, iron, and copper (crucial for thyroid hormone synthesis), selenium and zinc (needed for converting T4 to T3), and vitamin D (assists in regulating the immune response) (8, 9). 

Another risk factor for gut health is low stomach acid, inadequate bile acid production, and digestive enzyme deficiencies, which impact digestion and nutrient absorption while increasing your risk for infections, bacterial overgrowth, or parasites- which all increase the risk for pregnancy loss (10, 11). 

To support stomach acid and bile, incorporate bitter foods before meals: apple cider vinegar, arugula salad, beets, dandelion greens, kale, and garlic (12). 

Foods to incorporate daily for gut health and gut healing include grass-fed gelatin (you can make it into jello or gummies), bone broth, and probiotic foods such as fermented foods and yogurt. We will talk more about gut health when discussing healing after pregnancy loss surgery in the below sections. 

Try warm foods

Focusing on “warming” foods is a common postpartum practice, but healing your body after any pregnancy, including those with baby loss, involves similar healing principles. Warm stews, roasts, and soups are things other countries serve after pregnancy to warm and help restore health (13). These are often foods we crave more frequently when we want comfort. 

What nutrients may be relevant to pregnancy loss?

Though it’s unlikely that a single nutrient is the culprit for any pregnancy loss, there are associations between different nutrients and the risk of loss. A few key nutrients to note include: 

Vitamin D 

Vitamin D will also be exceptionally important to consume! In addition to working with calcium for optimal bone health, vitamin D has been shown to aid in cardiovascular health (14). Studies have shown that many women are deficient in vitamin D (15). Exposure to the sun mid-day for several minutes can help your body make vitamin D, but eating foods like salmon, egg yolks, or dairy enriched with vitamin D will help.

A recent study from 2015 (16) found an association between vitamin D deficiency and miscarriage in the first trimester but no association in the second trimester. The study acknowledges a need for more human research, but it is recommended to consult with your doctor even before you become pregnant to get your vitamin D levels tested. It will be helpful in deciding whether or not a supplement may benefit you and your future baby if you’re not able to get daily sunshine or consume enough vitamin D-filled foods.

Vitamin D is hard to get through food since there are limited options, so most women will need to supplement even with more than a prenatal vitamin has to offer. Read the vitamin D note for more information!

Nutrients for thyroid health 

Thyroid issues can often make getting pregnant and staying pregnant a challenge. One study found that increased TSH (thyroid-stimulating hormone) levels above normal increased the risk of miscarriage versus women who had normal TSH levels and had no increased risk of miscarriage (17).

Women who have tested positive for thyroid autoantibodies leading to thyroid inflammation also have an increased risk of miscarriage and preterm birth (18). People who are treated for thyroid dysfunction typically go on to have normal pregnancies (21). Getting a diagnosis for thyroid dysfunction is the first step to treatment. But below are three nutrients of importance when it comes to managing a thyroid condition.

Iodine: This micronutrient is important for thyroid hormone synthesis. However, researchers have found that too much iodine can have detrimental effects on maternal thyroid health (23). However, a study that examined many iodine supplementations while prenatal-perinatal and postpartum studies stated that more research is needed as the evidence is low quality and not strong (22). Fish, dairy products, and iodized salt have iodine, and iodine-intake-related problems when it comes to pregnancy are not common, although can be severe (23). The American Thyroid Association recommends pregnant women take 150 mcg of iodine daily, and most prenatal vitamins fail to meet this requirement. Learn more about iodine here. 

Selenium: Studies have shown that selenium intake was associated with reduced thyroid inflammatory activity during pregnancy and postpartum (24). Selenium can be found in meat, fish, eggs, and Brazil nuts. Learn more about selenium here. 

Iron is also crucial for proper thyroid function and is discussed in more detail below. View our note on iron as well for more detailed information. 

Are there certain foods I should avoid after a pregnancy loss?

It’s important to know that eating food itself is not linked to miscarriage, but some of the illnesses you can contract from consuming the food can. The CDC has data on current foods that have been linked to foodborne outbreaks here.

Alcohol

There is still research being conducted on this topic, but animal and human studies (25) have pointed to a direct physiological mechanism where alcohol has a negative effect on pregnancy outcomes, such as an increased risk of miscarriage, stillbirth, preterm delivery, and sudden infant death syndrome (SIDS). Learn more about alcohol consumption here. 

Mercury

Maternal exposure to mercury has been shown to have detrimental effects on a developing fetus. A handful of mother-child studies found neurodevelopmental delays in the children of women who consumed seafood high in mercury as their children got older (26). King mackerel, swordfish, shark, marlin, tilefish, ahi tuna, and bigeye tuna all have high mercury levels (27). 

However, it is important to note that consuming fish, like salmon, is safe and recommended while pregnant. Research shows that the benefits of consuming seafood outweigh the risks. Learn more about this research here.  See a list of low-mercury seafood options here. 

Listeria

Listeriosis is an infection caused by listeria monocytogenes, and is a mild illness for the pregnant woman but can be severe for your unborn baby. According to the CDC, listeria outbreaks have been linked to deli meats, dairy products, and produce. The best way to prevent an infection is to avoid unpasteurized dairy products, avoid raw sprouts, wash fruits and vegetables, and store food at an appropriate temperature. Keep in mind the amount of people who actually get infected from listeria per year is around 1600 in the United States, which is about 0.005% of the population. Learn more about important food safety tips here. And review our eating-out guide here. 

Vitamin A

Vitamin A is an important micronutrient for human health and fetal development. It helps your baby’s eyes, organs, and skeleton develop. Like with any nutrient, too little or too much is not good. Vitamin A supplementation in the form of retinoic acid (retinol) can increase the risk of miscarriage and congenital malformation in a growing baby when blood levels of vitamin A are high in the mom’s blood during the first quarter of pregnancy (28). That being said, a research study that took a look at the very high dosing of vitamin A during pregnancy did not find associations between miscarriage or abnormalities in babies (29). High doses of vitamin A are typically found when women use retinol products on their skin or take it as a medication or supplement. If you’re taking or using retinol/retinal, speak with your doctor before you try to get pregnant again.

Remember, much research is still being done regarding what causes miscarriage. And there is still no concrete way of knowing what exactly causes every single miscarriage that occurs. 

Depending on the nature of your losses, how many you have had, whether you have known risk factors, or whether your provider recommends it, you may wish to conduct investigative testing into possible root contributors, as outlined below. 

How do I plan for pregnancy after a previous one ended? 

As mentioned at the beginning, nutrition after a miscarriage isn’t entirely different from preparing your body for pregnancy and is similar to replenishing nutrients in a typical postpartum period. Although we are diving deep into recovery and pregnancy prep nutrition here, at the core, you want to eat a well-rounded diet focusing on including as many nutrient-dense foods that you enjoy eating each day. 

The Johns Hopkins Medicine blog, and we agree, recommends continuing to take your prenatal vitamins after your pregnancy has ended for nutrients like calcium, vitamin D, zinc, choline, vitamin B6, and folate (30, 31). This will help restore nutrients that may have been lost during pregnancy and prepare your body for another pregnancy.

Continuing to steer clear of smoking, alcohol intake (32), and excessive caffeine consumption are still being recommended to limit in the research (33) as of 2019 to aid female fertility. Maintaining a healthy weight and continuing your healthy eating habits are also recommended, as carrying excess weight outside of a healthy lab workup can put you at risk of pregnancy complications (34).

If your miscarriage was accompanied by blood loss, surgery, or anything else that requires extra healing on top of your loss, then certain nutrients will be imperative to help your bodily healing process.

Iron

Dietary iron recommendations for postpartum women return to non-pregnant level recommendations (35) unless you had blood loss during your miscarriage. Then your needs remain higher, closer to 27 mg per day. Regular iron intake recommendations for adult women are to consume 18 mg of iron per day (36). Red meat will have the most bioavailable iron, like beef, but iron can also be found in beans or tofu. If you have always had problems with anemia, check out this guide. 

Zinc

This mineral is essential to humans for general health but also for healing. Studies have shown that zinc plays a major role in cell repair, coagulation, and scar formation (37). If your miscarriage was accompanied by surgery, include foods high in zinc, like oysters, red meat, poultry, nuts, and whole grains.

Vitamin C

Vitamin C has antioxidant properties, aiding at the site of inflammation or damage, limiting free radical damage, and also helps in collagen synthesis (39). Though extra vitamin C is expelled from the body if it cannot be used, vitamin C is used in the healing process (38). Collagen is necessary for skin support and elasticity and to shrink the uterus back down after pregnancy (40). Citrus fruits and colorful vegetables will be your highest sources of vitamin C.  

Choline

This nutrient is important for the brain and is not commonly found in prenatal vitamins. A study from 2010 illustrated that pregnant women were not meeting their targeted choline levels (41) and recommended that women increase their intake of choline-rich foods. While you recover, try incorporating foods like chicken, beef, eggs, broccoli, and green peas to restore your choline levels. Learn more about choline here. 

Vitamin B12

This vitamin is important for making DNA and having healthy nerve and blood cells. A study from 2012 showed that vitamin B12 lowered during gestation but was adequately recovered in the postpartum period (42). Vitamin B12 (and B6) have been studied relating to depression in the postpartum period, but this different study from 2012 (43) found no significant differences between those who did display depressive symptoms and those who did not in relation to B12 (and folate and B6) intake during or before pregnancy in the postpartum period. Vitamin B12 is found naturally in animal products and is commonly fortified in almond milk, soy milk, and cereals. Learn more about B12 here. 

Magnesium

Magnesium is another important mineral to increase your intake during times of stress, as stress increases magnesium loss in the body and is worsened by magnesium deficiency (44). Since it is more difficult to source from food alone, using magnesium flakes (in a bath or shower once cleared to do so), magnesium lotion, magnesium deodorant, or taking in supplemental form (you can add this powder to a mineral mocktail, see below) is a good idea. Learn more about magnesium here. 

How can I incorporate all of these nutrients during this time??

The following are meals and recipes that are both comforting and nutrient-dense to support your time of healing:

Antioxidant probiotic gummies

Ingredients:

  • 3 bags green tea (decaf or regular)
  • 3 bags probiotic tea (there are many options for probiotic teas, but this dandelion chai blend is ideal as it contains dandelion for liver health, ginger for any nausea and taste, digestive support, plus cinnamon and cardamom are comforting, warming spices!) 
  • 5 tbsp of grass-fed gelatin (discount code: RYANN18)
  • ½ cup lemon or lime juice
  • 1 ½  cups water
  • 3-4 tbsp of honey 

Directions:

Add lemon to half a cup of water and heat in a small saucepan. Add honey and teabags. Steep for 5-10 minutes. While steeping, add gelatin to a separate bowl of remaining 1 cup water and let bloom before adding to the saucepan. Stir in on medium heat until fully incorporated. Add to glass dish and cut into small squares after chilling until firm or pour into gummy molds. Chill in the fridge until set. 

Liver dark chocolate bark

Ingredients:

Directions:

Melt ½ cup dark chocolate chips, stir in collagen powder scoop, and spread out on a plate or pan, and sprinkle crumbled liver chips on top, along with coarse sea salt and dried tart cherries (beef brisket is also delicious with chocolate if you want to crumble that on top with it too). Let harden on plate/pan and enjoy! 

Any other recipe with liver is ideal for supporting healing with comfort and nutrients. See our how to cook with liver guide for more ideas. 

Quick Daily Mineral Mocktail 

Support cellular hydration and increased mineral needs by either using a pre-made mineral blend mix such as LMNT, jigsaw adrenal cocktail blend, Needed hydration support, or by making your own with unrefined sodium, cream of tartar, and a source of vitamin C. 

Drink 1-2 mineral mocktails per day in the acute healing phase especially the week during and after your loss. 

Ingredients:

  • 1 tbsp apple cider vinegar or 2 tbsp lemon or lime juice
  • 1/8 tsp salt
  • 1 tsp cream of tartar (for a potassium source) or 4 oz. coconut water
  • 8 oz water (filtered or sparkling) or half coconut water

Mix all together and enjoy just before eating!

Other supportive meals for healing: 

How else can I support healing after a pregnancy loss? 

Besides supporting healing with nutrition, you can support your body in many other ways.

Continue taking all supplements you were taking prior to, including your prenatal. This can be mentally difficult after a loss, and if you need to take a break from it (or switch to another high-quality but non-pregnancy-specific multivitamin) for a bit, that is okay, too. 

Utilize red light therapy daily, long-term to support mitochondrial health (45, 46). In addition to supporting tissue repair as “powerhouses of the cell,” healthy mitochondria are critical for fertilization, implantation, and normal cell development, so red light therapy can be a helpful tool to not only recovering but potentially supporting healthy cells for a future pregnancy and reducing the risk for recurrent pregnancy loss as well (47, 48, 49).  I use and love Lumebox. 

Manage grief and get emotional support

Whether you lost your baby the day after you got a positive pregnancy test or well beyond, either loss is an incredible loss of life, hopes, and dreams for the future, and this warrants grief.

Know that you are not alone in your experience (at least 1 in every 4 women will experience pregnancy loss), and you deserve dedicated time to support healing physically and mentally (50). 

In addition to seeking support from those close to you, it may be helpful to seek formal support from a professional specializing in grief counseling. 

There are also organizations and resources available to you: 

Prioritize rest and sleep

Besides nutrition, sleep is a cornerstone of supporting your mental and physical recovery after a pregnancy loss. 

  • Aim to get 7.5-9 hours of sleep per night
  • Avoid electronic devices 1 hour before bed. 
  • Make your room as cool and dark as possible.
  • Consider using a sleep mask and white noise machine. 
  • Avoid consuming caffeine during the day past 2 pm.
  • To help optimize sleep quality, try setting aside 30-60 minutes before bed to unwind.
  • Minimize screens at night, wear blue light-blocking glasses if you watch TV, and consider putting a red light lamp in your bedroom and/or using a red night light and/or red bulbs in your bedroom.
  • Prioritize getting sunlight in the morning and at dinner to support melatonin levels.
  • Have a cup of tea (Traditional Medicinals Nighty Night extra or Celestial seasonings are perfect for promoting sleep)
  • Do anything else that helps you relax: dim lights, prayer, reading or listening to an audiobook, drawing, puzzles, activity like knitting or crocheting, listening to soft music or white noise (the “white noise lite” app is free with lots of free white noise backgrounds), journaling, lavender scented neck wrap, or use a weighted blanket. 

Address your potential toxic burden

Are you currently or do you have a history of exposure to mold, heavy metals, or chemicals? Studies have found associations between these and pregnancy loss (51). 

The more environmental toxins you are exposed to regularly, the more difficult it becomes for your liver to do its job, in addition to having the potential to impact your thyroid and hormones (52). 

Addressing environmental toxins is a process, and we all start in different places. It can also be a costly one if done all at once, but as discussed in our Hashimoto’s note, there are many impactful changes you can make gradually over time and as your budget allows: 

10 ways to decrease your toxin exposure:

  1. Support detox pathways to eliminate harmful endocrine disruptors: sweat (exercise or a walk on a sunny day), consume 30 grams of fiber daily, and staying well-hydrated.
  2. Filter your water. Tap water contains fluoride that has been found to impact T3, T4, and TSH hormones. Filtering it is an easy way to avoid this source! One way to do this is by using a filter under your sink so it’s safer to wash produce and anything you use it for with food. AquaTru and Berkey are two reverse osmosis filters recommended!
  3. Support your natural detox functions by increasing your antioxidant and cruciferous veggie intake to maximize your dietary phytonutrients and increase your body’s detoxification ability (53).
  4. Shop for clean beauty at Credo (tons of brands ranging in prices!) and Crunchi. Start swapping the products you use most frequently when you run out of what you have.
  5. Use Branch basic cleaning products or Aunt Fannie’s on Amazon. To learn more about clean beauty and household products, check out @toxinfreetay on Instagram!
  6. If your toothpaste has fluoride, swap for hydroxyapatite toothpaste, which is a safe and effective alternative for fluoride for both children and adults (54, 55). Look for any “fluoride-free” toothpaste at the store!
  7. Ditch any products that aren’t essential for you that you won’t miss, such as candles, scented plug-ins, body sprays, dryer beads, etc. 
  8. Limit plastic wherever you can. For example, replace plastic food containers with glass, avoid plastic wrap for food, and use stainless steel or glass water bottles. 
  9. Buy organic when possible and as you can afford— starting with following the Clean 15 and Dirty Dozen recommendations for produce! More on organic foods here. 
  10. Limit your consumption of processed baked goods and sodas as much as possible, make homemade alternatives for store-bought baked goods whenever possible, and swap soda with sparkling water. 

You can also reduce your toxic burden by supporting detox with the recommendations for supporting detox pathways as well. 

Take a critical look at your stressors and mental well-being

Chronic and acute stress are common roots of all the above issues. It’s impossible to heal while in a state of stress. 

While pregnancy loss is (understandably) an immense stressor to handle, it’s important to get all the support you can to process your loss and other physical and emotional stressors in your life for full health going forward.

Besides stressors on your body (as discussed above, such as blood sugar dysregulation, undereating or nutrient deficiencies, high intake of inflammatory foods, infections, gut dysbiosis, poor sleep, over- or under-exercising, and environmental toxins), countless day-to-day emotional stressors impact each of us in different ways. 

Things to consider:

  • How is your work-life balance?
  • Do you have stable relationships? Close friends or family to confide in?
  • Do you have hobbies and do things you enjoy each day?
  • Do you take time for yourself? (Ideally, at least a small amount of time daily plus 1-2 full days off work each week.)
  • Do you have unresolved past trauma?
  • Are you generally satisfied and happy with yourself and your job/vocation in life? 

While it’s often a bidirectional relationship between anxiety and depression and pregnancy loss (and again, it’s understandable that you would not be completely yourself after such a loss and/or have anxiety going forward with conceiving or a future pregnancy), it is noted that anxiety and depression are risk factors for recurrent pregnancy loss (56). 

Even if you don’t have diagnosed anxiety or depression, nervous system regulation is an essential aspect of healing. Your body cannot dedicate energy to healing when in a sympathetic state (not to mention that reproductive functions aren’t deemed an essential process when in this state, so conception can be more difficult) (57). Not surprisingly, autonomic system dysregulation is thought to be an under-recognized cause of fertility issues (58). 

Stress isn’t going away anytime soon, so how can you increase your resilience to stress for more effective coping? Evidence-based recommendations include (59, 60):

  • Cognitive behavioral therapy (CBT)
  • Practice self-compassion
  • Daily gratitude practice
  • Daily relaxation practices
  • Set goals
  • Volunteer in your community
  • Reframe negative situations 
  • Focus your time and energy on what is under your control (vs what you cannot control)
  • Positive thinking
  • Surround yourself with positive people
  • Build a strong support network 
  • Work with a professional

How can I support healing if I had surgery to treat my pregnancy loss? 

If surgery is a part of your treatment in addressing a pregnancy loss, there are added considerations for recovery. In general, prioritize the same recommendations above and do anything below you can. 

Red light therapy 

Try it for at least 20 minutes daily to stimulate tissue repair and accelerate healing, reduce inflammation and pain, and support healing (61, 62, 63). (It can be any time of day or broken up into chunks; do it at least 10 minutes before bed to support melatonin and quality sleep). Look for a low EMF (electromagnetic field) light like this one.

Note: Studies have found red light therapy to support fertility by reducing inflammation, improving sperm quality, and improving conception rates. However, since it would be unethical to conduct studies on its safety during pregnancy, we do not have evidence guaranteeing it would be safe to use it (64, 65, 66). Therefore, it’s best to use it only when you are not pregnant. 

Glutathione

Glutathione supports immunity, liver detox, and antioxidant activity (67, 68). To increase glutathione production in your cells, consume sulfur-rich foods such as cruciferous vegetables (broccoli, brussels sprouts, cauliflower, kale, watercress, and mustard greens) and especially animal foods high in sulfur, including beef, fish, and poultry, since sulfur is needed to synthesize glutathione (69, 70). 

You could also take glutathione as a supplement alone or with another nutrient in a supplement, such as NAC. N-acetyl-cysteine/NAC is an amino acid that supports glutathione levels and promotes detox and antioxidant activity (71). You can take NAC in supplemental form and consume high-protein animal foods such as beef, chicken, and eggs. 

Other optional supplements to consider are arnica and bellis perennis to reduce pain, inflammation, swelling, and blood loss (75, 76). 

Emphasize healing your gut

If you underwent surgery, it’s also likely that you took antibiotics to prevent infection. It’s important to support gut health in an intentional way after taking antibiotics since they not only eradicate bad bacteria but also kill off good bacteria and deplete nutrients by reducing their absorption, including B vitamins, calcium, magnesium, potassium, and vitamin K (77, 78). 

Other ways to consider that support general healing AND gut health are humic fulvic minerals, collagen, and bone broth (which is also a source of collagen)

Humic fulvic minerals are minerals that also have the bonus of antimicrobial effects, are anti-inflammatory, contain antioxidants, and support gut health (72). You can add them to a mineral mocktail or any other drink (buy them here).  

Collagen is important to support tissue healing and regeneration (73). You can get collagen from meat skins, pork rinds, pulled pork, and bacon, or add it to coffee, tea, smoothies, or any other drink in supplemental powder form. We recommend either Needed (discount code TPNL) or Further Food (discount code RYANN18) collagen powders. 

Bone broth is a natural food source of l-glutamine, minerals such as calcium and phosphorus, amino acids, and collagen, and research has found it can reduce pain levels and pro-inflammatory proteins (74). You can make your own bone broth (with any carcass in a slow cooker) or buy it conveniently pre-packaged! 

Support natural detox in recovery.

“Detox” is often used as a buzzword, and a “diet culture” buzzword at that, but our bodies naturally detox through our skin (sweat), digestive tract (urine and feces), lymphatic system, kidneys and liver, and lungs (breathing). So, we aren’t at all talking about a tea or green juice detox here. In fact, it is not recommended to partake in any weight-loss-centric detoxes from your local juice shop. 

If you had surgery and antibiotics following a pregnancy loss, keeping detox pathways open and supporting natural detox (of anesthesia, antibiotics, and any other medications you may have been given) is an important piece of the recovery process. Yes, your body can and will do this naturally, but supporting it in doing so, especially considering everything you have been through in this healing journey, is important! 

Remember that the foundation of detox starts with diet! Focus on whole foods, quality animal protein and fat sources, hydration, and many different veggies. Additionally, cruciferous vegetables, berries, garlic, herbs, and spices such as turmeric can be helpful for detox systems and enzymes (79). 

Get a good sweat 

Every time you sweat, you remove waste products and toxins from the body (80). 

If you have access to a sauna, this can be a helpful additional tool to support natural detox after surgery and antibiotics (just clear this with your surgeon/medical team before using it again post-operatively) (81). An at-home sauna blanket is also effective as long as you’re sweating!

However, a sauna isn’t the only way to get in a good sweat-exercise (again, once you are cleared to do so); being outside in the sunshine in warmer months, or even doing housework, can be productive ways to work up a natural sweat to support this detox pathway. 

Digestion and elimination

Since toxins are excreted through feces and urine, staying hydrated and having daily bowel movements are key to elimination (82).

Between changing hormones following a pregnancy loss and especially if you undergo surgery, bowel movements may temporarily become less or more frequent (with either constipation, loose stools, or both). This is normal, but it doesn’t mean you can’t do anything about it. 

For constipation: 

  • Add fiber to a drink/smoothie: psyllium husk fiber, chia, or flax seeds
  • Add other higher fiber foods such as berries, nuts, and avocados 
  • Move gently (even just getting out of bed) at least every hour 
  • Stay hydrated and add lemon or apple cider vinegar to warm water each morning and as often as you’re able to 
  • Ginger root or ginger root tea
  • Magnesium citrate 
  • Drink Traditional Medicinals smooth move tea

For loose stools/diarrhea (higher likelihood after surgery/antibiotics): 

  • Keep foods bland: green bananas, unsweetened applesauce, bone broth, meats, soups, cooked veggies if tolerated (may need to temporarily limit or avoid veggies as well) 
  • Stay hydrated and replenish electrolytes 
  • If more severe, you can take a homeopathic remedy such as podophyllum peltatum  
Supporting blood flow and your lymphatic system

Your lymph system, or the network of organs, vessels, and tissues that move lymph fluid through the bloodstream, is also responsible for carrying waste products to be eliminated (83, 84).

To increase lymph flow, you can do any movement or form of exercise: walking, running, and especially jumping on a trampoline (just make sure if you are post-op that you wait until getting high-intensity exercise clearance) (85, 86). 

Respiration/breathing

Breathing stimulates lymph flow and reduces fluid accumulation (87).  Other ways to support respiration include exercising or any activity that gets your heart rate up, such as housework, brisk walking, or deep breathing. 

What are things I can do to advocate for myself to my medical provider(s) after a pregnancy loss? 

Whether you have had one loss or many, it is never wrong to want answers, look into potential contributors to the loss, and do everything in your power to try to reduce your chances of this happening again. 

While the exact cause of many pregnancy losses may never be known, especially if the loss was earlier on and did not require medical intervention, there are always things you can look into for any loss. You do not need to (nor do we recommend) wait until you have recurrent pregnancy losses to look into these. If your doctor/provider refuses to run any tests on you at all until you have had 3 consecutive losses (as is often standard practice), it might be a good idea to find another provider (88). 

Though miscarriages are not uncommon and do not always mean something can be addressed, there are sometimes things that can be done on a medical and/or lifestyle basis to reduce your chances of loss again. 

General things to inquire about and look into exploring after pregnancy loss include (some of these might include utilizing a functional health provider as standard providers might not have knowledge of these or be able to order/interpret them): 

  • Blood sugar tests: HOMA-IR, fasting insulin, fasting glucose, A1C
  • General health: CBC and CMP
  • Thyroid tests: full thyroid panel + antibodies
  • Infections and gut health (since as mentioned above, women with recurrent pregnancy loss have been found to have abnormal gut permeability (89): GI MAP, vaginal microbiome testing or vaginosis profile
  • Nutrient status: Micronutrient panel
  • Inflammation: C-reactive protein (CRP), erythrocyte sedimentation rate (ESR) and plasma viscosity (PV)
  • Toxins: Mycotox panel (if history of exposure to mold or symptomatic) 
  • Recurrent pregnancy loss panel
  • Hormone imbalances: prolactin, LH, FSH, progesterone, estrogen 

There are many more tests and even investigative surgeries to assess possible causes and root issues, but that goes beyond the scope of this note. Even so, the above information is a great place to start, especially if you are not definitively dealing with recurrent pregnancy loss or infertility. 

You do not need to explore all of these at once, but address what might be the most likely or probable factors for you based on your symptoms, environment, family history and other risk factors, health, and lifestyle. 

Also, don’t forget to explore possibilities with both spouses: semen analysis should be conducted, as well as any or all of the above labs as well.  

How can I, as a friend, support my friend who went through a pregnancy loss? 

Maybe you’re reading this note and haven’t experienced a loss yourself and are wondering how you can help support your friend through a loss. You are already being a good friend by caring and wanting to be helpful to them in this!

Here are some ways you can support them through this difficult time:

  • Be present and listen: your time and attention are one of, if not the most helpful and valuable gifts you can give anyone suffering from a loss. If your friend needs space or wants to be alone, they can always decline your invites, but always reach out to them to at least offer ways to spend time together (or if they live far away, offer phone calls/video calls). Check up on them, especially if you notice them going radio silent or MIA for a while. 
  • Ask them specific ways you can support and be there for them and offer suggestions and ideas, such as inviting them over/offering to visit them, bringing over meals, doing any activity the friend enjoys, doing something distracting like watching a comedy movie or reality TV night, or just going on a walk to process everything together 
  • If the baby was given a name: refer to the baby by name
  • Say: “I am so sorry for your loss.” It is important to articulate these words in some form, and this phrase is also adequate if you don’t know what to say. 
  • If the loss mom is religious, prayer intention/service/mass cards, saint cards/medals/key chains/mini statues (if the baby is named after a saint) are always appreciated
  • Recognize the loss mom and father especially during holidays that are difficult: send cards for mother’s day and father’s day (especially if this baby was their first and the parents might not otherwise be recognized), give them a special ornament for christmas with the baby’s name/sonogram picture, or an egg/mini Easter basket at Easter, card at Thanksgiving letting them know you are thankful for their family. 
  • Do something special in memory of and honor of the baby: plant a tree, any kind acts of community service, organize a local walk/run with friends for the baby (optional: if a specific cause of death was known, have each person donate $5 and donate the money to a charity for that condition), donate to a charity the loss parents love 
  • If you are looking for a gift for the loss mom, Etsy has many gifts and gift baskets, keepsakes, and other personalized tributes for pregnancy losses 
  • Let them know their baby will never be forgotten and is always a special member of their family
  • Recognize how no matter how short the life, their little one was created with a purpose and mission in this life and beyond
  • Check in on them in the weeks and months (and years) following their loss: Grief over the loss of a life never completely goes away. Though it often becomes less acute and more bearable in time, it will always exist in some form and to some degree. Keep in mind, this holds true even if the couple goes on to give birth to more children, and is never a replacement for those lost! Sometimes, grief can become even lonelier in time when it is no longer acknowledged, as often people may be showered with love and support in the immediate days following the loss, but in time, others move on, while they never do. Simply acknowledging them by asking how they are doing regarding their little one, or even the occasional text or card letting them know you are thinking of them and the little one they lost, goes a long way in letting them know they are not forgotten, and you will be continually supporting them in this journey. 
  • Follow their lead: everyone is unique, and each person grieves and copes with loss differently. Tune into the way your friend articulates their feelings and perspective on the situation, and support them by sharing their perspective and views on the situation. There is no one way or wrong way to grieve. 

For example, if they share how angry they feel or how unfair the situation feels, commiserate with them. Or perhaps they sometimes want to share about the joy that their baby brought them in a short time, or the good things that came of pregnancy, then join them in sharing how the little one’s short life touched you as well. 

Remember, grief is often multifaceted and might bring many different emotions on different days and times, so there can often be both joy and gratitude along with tears, anger, sadness, or disappointment—all are valid, and being a true friend is supporting and joining in all of the above in your friend’s healing journey. 

Other ideas for ways to support your friend during this time, depending on the nature of your relationship:

  • Offer to drop by for a meal or organize a meal train (especially if they are undergoing surgery for a pregnancy loss) and/or make them one of the recipes to support healing above in the recipe section. If you live far away, you can send a gift card for a meal delivery service, a fast food delivery company, or their favorite restaurant gift card. 
  • Send them a personalized wellness/goodie basket: this can be full of their favorite foods, comfort foods, a specific theme of a hobby or activity, pampering/spa themed, or a movie they love (this basket can also be funny, helpful, serious, sentimental, or a combo of the above). You can also send a healing basket if you know them well enough to know they would want the supplements and recommendations for products, foods, and supplements above in their healing journey (see above healing section for ideas. Things like fuzzy socks, a cozy blanket, lotion, teas, or other care products can also be comforting.
  • Give the loss mom a gift card to some kind of pampering/spa/wellness service (e.g., mani/pedi, facial, wash and blowout, massage) if they would enjoy it. Self-care can become more difficult in grief, and having others take care of these things can be both soothing and a peaceful welcome distraction (as well as a relaxing excuse to get out of the house). 
  • Write them a thoughtful card/note expressing your condolences, appreciation for them, or the impact their baby/pregnancy had on you, and letting them know you are in solidarity with them in these challenging times 
  • Offer to host an event to recognize their baby, such as a mass or service followed by a luncheon, a celebration of life with other friends, or even just a day with the two of you doing things you love together, or any fun things in honor of their baby.
  • Give (or make your own) memorial box.
  • In the long run, let them know how their little one(s) are not ever forgotten, even if they go on to have future children on earth (even in the little ways, like acknowledging the total number of children/pregnancies they have, rather than just those that were to term or children born). One way to do this is by noting the important dates associated with the pregnancy loss in your calendar with annual reminder notifications (these might include days such as the date of loss, baby’s birthday for a stillbirth, or any other form of miscarriage which involved your friend giving birth/what she classified as giving birth, a D&C surgery date, due date, etc.). Recognize these days annually with verbal recognition, a text, a card, a phone call, or other check-in to let your friend know you are always remembering her loss, her little one, and allow her to talk about her little one or the events surrounding those days again if she would like.

Things to AVOID doing after someone experiences a pregnancy loss

Though everyone is unique and each person copes with loss in their own way, these are general phrases and actions that are often not helpful and even hurtful for those undergoing loss.  

  • Saying nothing at all about the loss or avoiding the topic of the loss: it is often awkward and uncomfortable for those who have suffered a loss to bring up the subject themselves. If you avoid the subject, even if they want to process it out loud and talk about it. Ignoring the subject can also be hurtful (even if you are just trying to spare their feelings). Instead, ask directly about how your friend is coping/feeling/doing in the days and months following the loss. Don’t assume, just because a certain amount of time has passed, that they no longer want to discuss it or are no longer mourning. If you are worried they may not want to discuss it, you can always ask: “Would you like to talk about your baby/baby’s name? Or would you prefer some distraction right now?” 
  • All phrases starting with the phrase “at least…” 
  • Alluding to this event being “part of God’s plan” (even if you and your friend are religious, people might not agree that it is part of His plan, or agree that it is a good one, often have difficulty understanding it, and/or might find it patronizing for anyone to say that to them). 
  • Being philosophical, bringing theology into the situation (unless they do so first), or trying to make it a teaching moment for them/offering wisdom in a patronizing way. Remember: saying “I am so sorry” is never wrong if you are at a loss for words! 
  • Trying to find the good in the loss, unless the loss mom herself first talks about things she finds good in the situation 
  • Avoid giving unsolicited advice unless your friend specifically asks for your opinion or advice on the situation. Avoid giving advice on grieving, managing the loss, healing, or ideas for trying to conceive or stay pregnant/prevent loss in the future. If they do not ask for advice, it’s safest to assume it would not be helpful at this time. 
  • Vague phrases such as “Let me know how I can help.” Many people in grief do not have the mental capacity to come up with ways to help, which puts the burden on them to brainstorm ideas for your involvement. Instead, be creative and offer specific, concrete ideas and ways you can help, such as: “Would it be helpful if I did XYZ on this day?”
  • Never allude to the loss being in any way within the person’s control, having been preventable (even if you feel it was, it is not appropriate to suggest it was this way between them and their medical providers), or somehow influenced by the person’s actions. If the loss mother wants to explore possible risk factors, this is her decision to make and a separate conversation to have at a different time, and only if she initiates it. 
  • Asking when they will “try again” or if they have started trying to conceive again. Even if their TTC journey was something you discussed together in the past, it might be something they prefer to keep private following a loss or could be a sore subject (especially if a longer healing period that requires abstinence from TTC is warranted), so it’s safest to avoid asking unless your friend initiates the conversation. 

The Bottom Line

  1. Pregnancy loss is devastating, with many physical and emotional complexities to address as you heal. There is no way to know exactly what caused your miscarriage, so it is important to understand it is not your fault. 
  2. Though it can be difficult to find the motivation to optimize nutrition after a pregnancy loss, enlisting support with cooking can help you meet your nutrient needs. In general, focus on eating for blood sugar balance, foods that support both your physical and emotional healing, and foods for your gut health. If you had surgery to address your pregnancy loss, you can utilize red light therapy, drink bone broth, eat foods high in collagen, glutathione, NAC, and humic fulvic minerals to support healing and replenish nutrients lost through taking antibiotics, including B vitamins, calcium, magnesium, potassium, and vitamin K. 
  3. Certain foods, as well as micronutrients, have mixed results when it comes to assessing if any of them are related to miscarriage, and research is still ongoing. However, testing your vitamin D levels and thyroid levels is an absolute must. 
  4. Continue to take care of yourself, eat foods that make you feel good, have someone else cook for you, and stay hydrated. Other areas to potentially address after a pregnancy loss include managing grief and getting emotional support, prioritizing rest and sleep, reducing your toxin exposure, and reducing stress.
  5. Find a doctor who listens to your needs; it is okay to ask questions and request more from your provider, whether that is in a deeper explanation or running more tests, including blood sugar tests, a full thyroid panel, infection, gut, and vaginal microbiome tests, a micronutrient panel, inflammation tests, toxin tests, hormone assessments, or a pregnancy loss panel.  
  6. If you are a friend of someone who has recently experienced a loss, support them by being present to them, recognizing the immensity of the loss, offering specific ideas to support them during this time, and avoiding potentially hurtful comments or actions that could come across as minimizing the loss or making it seem less tragic than it is even if it is common. 

Written by: Claire Gilmore, MSCN, CNS, LDN and Alessandra D’Orazio, MS, RD

Reviewed/edited by: Ryann Kipping, MPH, RDN, LDN

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Optimizing Fertility after Birth Control

Hormonal birth control is commonly used to prevent pregnancy and to manage symptoms like acne, heavy bleeding, and painful cycles. While it can be helpful in the short term, it often masks underlying issues rather than resolving them, and those root causes may resurface once you stop taking it.

If you’re preparing to TTC, planning to stop birth control soon, or just want to understand how it affects your body, this guide will help you navigate the transition. We’ll cover how the pill works, how it may influence hormones, nutrient status, and other systems, and what you can do to support fertility after stopping.

What is birth control?

Birth control refers to a wide range of medications, devices, or procedures used to prevent pregnancy. They may also be used for other reasons, such as painful menstrual symptoms.

Oral birth control, aka “the pill,” is a common form used to prevent pregnancy or treat symptoms, and is commonly prescribed by health care providers.

Most oral contraceptives are made with combinations of synthetic (man-made) estrogen and progestin, a synthetic form of the hormone progesterone. These hormones enter the brain and act as endocrine disruptors, interfering with the signaling pathways necessary for ovulation.

In particular, they prevent the hypothalamus from signaling to the pituitary gland (which regulates your hormones) to secrete the hormones that cause an egg to be released. Without ovulation, pregnancy cannot occur. In the unlikely event that ovulation occurs and an egg is fertilized, the synthetic progestin thins the uterine lining, increasing the likelihood that the egg will be shed.

Many birth control pills include a week of placebo pills that induce monthly breakthrough or withdrawal bleeding, but this is not a true period (3)! This looks like a period, but it is not a true menstrual period because it doesn’t follow ovulation. It’s a bleed caused by the sudden drop in synthetic hormones.

For this note, the primary form of birth control we will be focusing on will be oral hormonal birth control, its associated side effects, and what you can do to replenish your body’s nutrient stores if you have been on it for any period of time!

Why can birth control be problematic?

There are valid reasons to use birth control, whether for contraception, acne, or painful periods. This guide isn’t a recommendation for or against birth control; it’s intended to provide context on physiological effects and how to support your body during transitions.

Many people start birth control to manage symptoms, believing it fixes the root cause. In reality, it often suppresses symptoms without resolving the imbalance, which is why issues like heavy bleeding, acne, or irregular cycles may return (or appear in new ways) after stopping. The pill doesn’t create new problems—it can simply mask what’s already happening.

It’s also important to remember: symptoms like debilitating periods, acne, or extremely heavy bleeding may be common, but they’re not normal. These symptoms have root causes that deserve to be addressed beyond a temporary hormonal override.

Where to start:

Increase nutrient-dense whole-food meals, especially quality proteins, seafood, leafy greens, and mineral-rich foods—to support hormone production and detox pathways. Pair this with a functional provider who can help you evaluate potential contributors, such as thyroid issues, gut health, and blood sugar regulation.

We’ll walk through each of these in more detail throughout this guide, so you know exactly how to support your body as you transition off birth control.

How does birth control affect different systems of the body?

Hormonal birth control works by overriding natural hormone rhythms, so it makes sense that it can influence more than just your reproductive system (4, 5).

Hormonal birth control pills provide synthetic hormones, which can lead to effects in all systems of the body:

Hormone Signaling

Hormonal birth control suppresses communication between the brain and ovaries (the hypothalamus–pituitary–ovarian axis), preventing the natural rise and fall of hormones needed for ovulation. After stopping, your brain and ovaries often need some time to “reconnect” and resume regular, ovulatory cycles.

Nutrient Status

Some research shows that hormonal contraceptives may reduce nutrient levels or increase the body’s need for nutrients such as folate, B6, B12, magnesium, zinc, selenium, and antioxidant vitamins (4, 6, 7, 8). These nutrients are essential for ovulation, egg quality, thyroid function, mood, and detoxification, which is why replenishing them after stopping birth control can be highly supportive.

Thyroid Function

Estrogen-containing birth control increases thyroid-binding proteins, which changes how thyroid hormones circulate (9). This doesn’t usually cause thyroid disease, but it can affect lab results, and people with underlying thyroid tendencies may feel shifts. Checking thyroid labs after stopping birth control can be helpful if you notice fatigue, hair loss, or temperature intolerance.

Metabolism and Blood Sugar

Some hormonal birth control methods may influence insulin sensitivity or lipid levels in certain individuals (5, 10). Even if you didn’t feel these effects, stabilizing blood sugar through balanced meals and movement is an integral part of supporting hormone health going forward.

Liver and Estrogen Detoxification

Your liver metabolizes synthetic hormones. Your liver needs nutrients such as choline, B vitamins, and antioxidants to complete the detoxification process (11). Supporting liver health through whole foods, fiber, cruciferous vegetables, and healthy digestion becomes essential during and after stopping birth control.

Gut Health

Some studies suggest hormonal birth control may influence gut bacteria and intestinal permeability in certain people (12). Because gut health affects nutrient absorption, inflammation, and estrogen metabolism, nourishing your digestive system can help support hormone balance during the transition off birth control.

Mood and Brain

Responses to hormonal birth control vary widely. Some feel their mood improves, some notice anxiety, lower libido, brain fog, or emotional changes (13, 14). These effects may be due to shifts in neurotransmitter levels, altered brain hormone receptors, or nutrient depletion. If you noticed mood changes on or off birth control, your experience is valid and worth bringing up with a provider.

Can birth control affect fertility?

The good news is that hormonal birth control does not cause permanent infertility in people who were otherwise fertile (15). But because it suppresses natural hormone signaling, fertility may take time to return as your body re-establishes regular ovulation  (16).

If you had underlying conditions before starting birth control, such as PCOS, thyroid dysfunction, or irregular cycles, those patterns may resurface once synthetic hormones are removed. This can extend the timeline for restoring optimal fertility, not because birth control caused new problems, but because it temporarily masked existing ones.

This does not mean that getting pregnant after birth control is impossible. Still, it does mean that if you have been on birth control before trying to conceive, it’s most realistic to recognize it could take some time to get back to an optimal fertile state (this depends on your unique physiology, health, and how long you were on birth control). 

Most people resume ovulation within a few months after discontinuing hormonal birth control (17, 18). IUDs and implants may allow faster return to fertility once removed, while the Depo shot may take the longest (sometimes 6–12 months).

If cycles don’t return or remain irregular after several months, consider evaluating thyroid function, blood sugar balance, and nutrient status with a knowledgeable provider.

What should I expect when stopping BC?

Transitioning off birth control looks different for everyone. Your experience will depend on your health before starting, the type of birth control you used, and how long you were on it. Some people transition very smoothly, while others experience symptoms, such as:

  • Irregular cycles at first
  • Temporary anovulatory cycles
  • Acne flares
  • Mood shifts
  • Heavier or lighter bleeding
  • Changes in cervical mucus
  • Cramps or PMS symptoms that were previously masked

All of these changes reflect your body transitioning out of a hormonally suppressed state and back into its natural cycle. If you don’t get a bleed within three months or if symptoms are extreme, talk with a healthcare provider.

What labs should I consider testing after stopping BC?

If cycles are slow to return or you want a full picture of your hormone health after stopping birth control, lab testing can offer important insights and identify areas that need support. A comprehensive lab panel to consider discussing with your provider may include:

  • Estradiol, progesterone, LH, FSH, prolactin
  • TSH, free T3, free T4, thyroid antibodies
  • Comprehensive iron panel
  • Vitamin D, B12
  • Hemoglobin A1c, fasting insulin, and glucose
  • Lipid panel

These labs can help determine whether your thyroid, blood sugar, or nutrient status is affecting ovulation.

Since hormonal birth control can influence mineral status, HTMA testing can be another helpful tool after stopping birth control. HTMA measures mineral levels and ratios in hair tissue, which reflect longer-term mineral patterns.

Because minerals are foundational for hormone production, thyroid conversion, blood sugar balance, and nervous system regulation, identifying imbalances through HTMA can help tailor a targeted nutrition plan to support fertility.

See if we have available HTMA spots under “nutrition services.”

What can I do to optimize fertility after coming off BC?

To support your body in resuming optimal fertility, focus on nourishment, replenishment, and consistent daily habits that support hormone health. Small daily habits can offer meaningful support in helping your body re-establish its natural hormonal rhythm and restore healthy ovulation.

Rebuild nutrient stores

Evidence suggests that oral contraceptives may lower levels or increase requirements of several key nutrients, especially those involved in methylation, neurotransmitter production, ovulation, and detoxification, including (20, 21, 22):

  • Magnesium: supports insulin sensitivity, sleep, neurotransmitter regulation, and muscle relaxation. It’s one of the more common post-pill deficiencies (23, 24).
  • Selenium: essential for thyroid hormone conversion and protecting follicles from oxidative stress.
  • Zinc: supports ovulation, egg quality, thyroid health, skin health, and immune function. It’s also used heavily during detoxification.
  • B6 (Pyridoxine): helps your body make serotonin, regulate mood, and convert tryptophan into melatonin to support sleep. It’s also crucial for healthy progesterone production and a strong luteal phase.
  • B9 (Folate): consistently shown to be lower in those using oral contraceptives (4). Adequate folate is essential for ovulation and fetal neural tube development.
  • B12 (Cobalamin): Birth control can reduce B12 levels (20), which impacts red blood cell formation, nervous system health, and DNA replication, which are critical for conception.

Optimize Minerals

Minerals play a foundational role in hormone signaling and reproductive function. Even small shifts in mineral status can influence mood, cycle length, cervical mucus, and progesterone production.

The minerals most affected by hormonal contraceptives appear to be zinc, magnesium, and selenium, as we addressed above (21). Other minerals that may be impacted and play an essential role in fertility include copper, iodine, and iron.

Incorporate mineral-rich foods daily, such as oysters, beef, eggs, leafy greens, nuts, seeds, and seaweed, and consider a simple mineral mocktail made with electrolytes and trace minerals to support hydration and mineral balance.

For a deeper look at mineral patterns, a Hair Tissue Mineral Analysis (HTMA) can be beneficial. HTMA evaluates long-term mineral status and provides insight into copper–zinc balance, adrenal patterns, thyroid-related mineral ratios, and potential deficiencies that influence cycles and fertility.

Support blood sugar balance

Balanced blood sugar is one of the most underestimated fertility tools. Stable blood sugar is essential for healthy ovulation. Even mild insulin resistance can suppress ovulation, shorten the luteal phase, worsen PMS, and increase inflammation (25, 26).

Hormonal birth control may influence insulin sensitivity in some people. Additionally, if you started birth control to help manage PCOS symptoms, it’s important to know that PCOS often has a layer of blood sugar dysregulation. Coming off birth control may reveal this pattern.

Practical steps:

  • Build meals with protein, healthy fats, fiber, and lots of color.
  • Avoid going long periods without eating to prevent crashes and cravings.
  • Incorporate regular walking and strength training.
  • Avoid “lonely carbs” (i.e., carbs without protein and/or fat)

Learn more here.

Work to improve gut health.

A healthy gut supports optimal nutrient absorption and hormone metabolism. Some research suggests hormonal birth control may shift gut bacteria or intestinal permeability in susceptible individuals (27, 28). Supporting gut health helps your body eliminate hormones efficiently.

Practical steps:

  • Aim for 25-35g+ of fiber daily
  • Include fermented foods (yogurt, kefir, sauerkraut
  • Eat a wide variety of colorful plants each week
  • Consume added sugar in moderation
  • Drink plenty of water

Learn more here.

Support thyroid health and hormone production.

The thyroid and progesterone work closely to maintain regular cycles. T3 and T4 influence ovulation, luteal phase length, and progesterone levels (29).

If you experience fatigue, cold intolerance, or very short luteal phases, supporting your thyroid with selenium, zinc, and iodine-rich foods may help. Adequate calories, stress management, and B6 also support healthy progesterone production.

If you experience these symptoms, additional thyroid testing may be indicated. Learn more about thyroid testing here.

Support liver detox

Your liver helps clear hormones, both synthetic and natural. Healthy detoxification doesn’t depend on “quick cleanses,” rather it depends on nutrients, blood sugar stability, and healthy digestion.

Practical steps:

  • Include cruciferous vegetables daily (broccoli, brussels sprouts, cabbage)
  • Eating enough protein (aim for 20-30g per meal)
  • Add choline-rich foods (eggs, salmon, liver in moderation)
  • Stay hydrated
  • Support regular bowel movements to prevent estrogen reabsorption
  • Limit alcohol to reduce liver burden

Learn more about liver health here.

Fertility-friendly lifestyle habits

Gentle lifestyle strategies support healthy ovulation, including:

  • Get adequate amounts of sleep
  • Manage stress (breathing exercises, meditation, walking)
  • Avoid over-exercising (especially if periods are delayed)
  • Ensure adequate caloric intake for your activity level
  • Simple cycle tracking, such as cervical mucus observations

What are alternatives to standard birth control?

If you are looking to avoid pregnancy during this time, know that hormonal birth control does not have to be your only option.

Fertility awareness-based methods include:

Fertility awareness-based methods teach you how to identify your fertile window using cervical mucus, temperature, or hormone tracking. When learned with an instructor and used correctly, these methods are incredibly accurate, at least as accurate as hormonal birth control (often, more so) (31). They also deepen your understanding of your cycle patterns.

Note that these take time and patience to learn! It’s ideal to start by working with a fertility educator who can help you interpret your body’s signs and patterns. Look for an instructor here.

If you are looking to gain more insight into your body and how it works through fertility awareness, here are some books and resources you can look into to learn more:

The Bottom Line

  1. Hormonal birth control prevents ovulation by suppressing communication between the brain and ovaries, which is why periods on the pill are withdrawal bleeds, not true periods.
  2. Hormonal birth control can be helpful for symptom management, but it often masks underlying issues (like PCOS, endometriosis, thyroid disorders, or blood sugar issues) rather than addressing their root causes.
  3. Your body can regain healthy fertility after birth control. Still, it’s not uncommon for ovulation and cycles to take some time to re-establish their natural rhythm, especially if underlying issues were previously masked.
  4. Nutrient depletion is well documented with oral contraceptive use, particularly of B vitamins, magnesium, zinc, selenium, and antioxidants. Replenishing these nutrients supports hormone balance and fertility.
  5. Stable blood sugar is an often underrated foundation for restoring ovulation, since even mild insulin resistance can delay ovulation, worsen PMS, shorten the luteal phase, and impact fertility.
  6. If you want non-hormonal birth control, fertility awareness-based methods can be effective options when used correctly and with plenty of practice.

Written by: Claire Gilmore, MSCN, CNS, LDN, and Jorden Edinger, MS, RDN, LDN
Reviewed by: Ryann Kipping, MPH, RDN, LDN

Posted on

TTC Nutrition Foundations: Start Here

We generally use the terms preconception, fertility, and TTC (trying to conceive) interchangeably, categorizing them as the time before you are pregnant. 

The preconception period is a powerful time to support your body before pregnancy.

This is your chance to build habits that support hormone health, ovulation, nutrient stores, energy, digestion, and overall resilience before you conceive.

The goal right now is to:

  • Support ovulation and hormone health
  • Build nutrient stores before pregnancy
  • Improve energy, digestion, and stress resilience
  • Create food and lifestyle habits you can actually maintain

You do not need to overhaul your life overnight to support fertility. Start with the basics, repeat what works, and build from there.

The 4 Foundations That Matter Most

These are the four areas we want you to focus on first during preconception.

1. Build Your Baseline

Why it matters:

Preconception is the time to create a framework that makes nourishing yourself feel more automatic. When meals, groceries, and routines are easier to repeat, consistency becomes much more realistic.

This is not about doing everything at once. It is about building a baseline you can return to again and again.

Start here:

  • Pick one anchor meal to strengthen, usually breakfast
  • Build your default grocery list with staples you actually use
  • Choose one prep rhythm that fits your life, such as Sunday prep or a weekday mini-prep
  • Create a simple fallback plan for hectic days

These should be easy, familiar options that help you stay nourished when life feels busy.

2. Hydration, Minerals + Digestion

Why it matters:

Hydration and mineral balance support energy, digestion, stress resilience, and hormone function.

Minerals play a foundational role in reproductive health, and even small shifts can affect factors such as mood, cervical mucus, cycle quality, and progesterone production.

This is also an important place to focus if you tend to feel constipated, bloated, depleted, lightheaded, or just generally “off.”

Key nutrients to pay attention to here include:

  • Magnesium
  • Zinc
  • Selenium
  • Iodine
  • Iron
  • Copper

Start here:

  • Create one daily hydration anchor
  • Hydrate before caffeine, ideally with minerals like coconut water
  • Add one mineral-rich food you will realistically eat this week
  • Support digestion with fluids, fiber, movement, and meal rhythm

A simple mineral mocktail made with electrolytes and trace minerals can also be a useful tool for hydration support.

Practical support:

  • Aim for 25–35 grams or more of fiber daily
  • Include fermented foods if tolerated, like yogurt, kefir, or sauerkraut
  • Eat a wide variety of colorful plants each week
  • Drink enough water to support regular bowel movements

3. Blood Sugar Balance

Why it matters:

Balanced blood sugar supports better energy, mood, and hormone signaling throughout the day.

This does not mean low-carb or any “keto vibes”. It means building meals that help you feel more stable, satisfied, and consistently nourished.

Start here:

  • Aim for regular meals and snacks
  • Build at least one balanced meal each day
  • Pair carbohydrates with protein and fat
  • Keep two go-to snacks on hand that help prevent getting overly hungry

Simple meal structure:

  • Fiber/color: fruit, vegetables, beans, lentils
  • Protein: eggs, Greek yogurt, cottage cheese, meat, fish
  • Fat: avocado, olive oil, nuts, seeds, butter
  • Flavor: herbs, sauces, spices, lemon

The goal is not to eat perfectly. The goal is to create a structure that helps your body feel more supported.

4. Micronutrients + Hormone Support

Why it matters:

Preconception is the time to strengthen your nutrient stores before pregnancy increases demands even more.

You do not need to focus on every nutrient at once, but there are a few big ones that matter most for hormone health, ovulation, and early pregnancy support.

The main nutrients to prioritize from food include:

  • Iron
  • Folate
  • Choline
  • Iodine
  • Zinc
  • Omega-3s
  • Vitamin D

The thyroid and reproductive hormones also work closely together. Stress, under-eating, poor sleep, and nutrient gaps can all make it harder for the body to feel supported.

If you experience fatigue, cold intolerance, irregular cycles, or short luteal phases, thyroid support, adequate calorie intake, stress management, and selenium-, zinc-, and iodine-rich foods may be worth paying closer attention to.

Start here:

  • Add one nutrient-dense food most days from each category 
  • Choose one weekly meal to intentionally upgrade
  • Build your own shortlist of top foods you can repeat regularly
  • Support your body with enough food, sleep, and recovery

Examples of supportive foods include:

  • Eggs for choline
  • Beef for iron and zinc
  • Seafood for iodine, selenium, zinc, and omega-3s
  • Leafy greens and legumes for folate
  • Fatty fish for omega-3s and vitamin D
  • Dairy or fortified foods for iodine and sometimes vitamin D

Simple pairings can also help:

Pair iron-rich foods with vitamin C-rich foods, especially non-heme sources of iron.
Include fat with fat-soluble nutrients (A, D, E, K).
Eat enough overall to support hormone production.

Start here: identify your biggest friction points

Before trying to do more, identify what currently makes consistency harder.

Common friction points include:

  • Lack of time
  • Low appetite
  • Stress
  • Poor sleep
  • Decision fatigue
  • Skipping meals
  • Feeling unprepared when days get busy

You do not need to solve all of them at once. Start by noticing what gets in the way most often.

Preconception Supplements to Consider 

A high-quality prenatal is the most foundational supplement during preconception, while other supplements may be helpful depending on your diet, labs, symptoms, or health history.

Everyone: 

Prenatal vitamin

To consider (based on diet, labs, or symptoms):

Omega-3s – if you do not eat enough seafood

Electrolytes/minerals – if you need more hydration and mineral support

Protein powder – if you need help meeting your protein needs

Inositol – if you have PCOS, insulin resistance, or blood sugar dysregulation

CoQ10 – if recommended based on age, egg quality, or fertility concerns

When to get extra support

Talk with your provider if:

  • Your cycles are irregular
  • You suspect thyroid issues
  • You have significant fatigue, hair loss, or cold intolerance
  • You have very painful periods or concerning symptoms
  • You think you may be low in iron or other nutrients
  • You are not ovulating regularly
  • You want more individualized support or testing

Additional nutrition support and lab work may be helpful in some cases.

Guides you might benefit from reviewing in the app:

The Big Picture

The preconception period is not about becoming “perfect” before pregnancy.

It is about helping your body feel supported, nourished, and more resilient through habits that are realistic enough to repeat.

The basics consistently matter most!

Regular meals, hydration, mineral intake, blood sugar support, nutrient-dense foods, and sustainable routines can go a long way toward supporting fertility and helping you feel better in your body now.

Start where there is the least friction. Repeat what works. Build from there.

Questions about your TTC journey?

Go to “Ask an RD” (search it or post your question there) or book a Quick Question Call 

Posted on

Vitamin D

What is vitamin D?

Vitamin D, or the “sunshine vitamin,” is an interesting fat-soluble vitamin because it’s the only vitamin our bodies can make from the sun.

In fact, the sun is our main source of vitamin D, providing anywhere from 50-90 percent of our vitamin D needs (1).

Like vitamins A and K, vitamin D has two forms, D2 (ergocalciferol) and D3 (cholecalciferol), both of which are found in small amounts in food: D2 in plant foods and D3 in animal foods. Processed foods, such as cereals, are often fortified with vitamin D (though, like any other fortified food, this is not the ideal way to obtain it). 

Vitamin D is one of the most studied vitamins when it comes to pregnancy, as it is related to so many important functions to keep you and your baby healthy. 

Vitamin D deficiency is common during pregnancy; over 80% in the second trimester, according to a 2026 meta-analysis (2). However, vitamin D deficiency is a problem worldwide. Most people in the US consume less than the recommended amounts of vitamin D (1).

This is due to multiple dietary, lifestyle, and physiological factors, which we will examine in more detail below. 

Vitamin D & Fertility

Vitamin D status may influence fertility outcomes. 

Overall, studies suggest that having sufficient vitamin D before conception (often defined as 25(OH)D ≥30 ng/mL / ≥75 nmol/L) is associated with slightly higher pregnancy and live birth rates, especially among people who start out deficient. However, results aren’t perfectly consistent across all populations.

What the evidence suggests

  • Natural conception: In prospective data, women with sufficient preconception vitamin D had a higher likelihood of clinical pregnancy and live birth (approximately 10–15% higher live birth likelihood in some cohorts) and, in some studies, a lower risk of pregnancy loss (1, 2, 3).
  • Infertility treatment/ART: Vitamin D status may be relevant for both partners. A couple-based analysis found a higher likelihood of live birth when the female partner was sufficient, and outcomes were strongest when both partners were non-deficient; however, IVF-specific meta-analyses have reported mixed or non-significant associations after sensitivity analyses (4, 5, 6).
  • Supplementation: In infertile patients, vitamin D supplementation has been associated with improved clinical pregnancy rates, with the greatest benefit observed in individuals who are vitamin D–deficient at baseline (7).

Vitamin D & Pregnancy 

Vitamin D supports key processes during pregnancy for both the parent and the baby. Low vitamin D status has been associated with a higher risk of complications, though not all studies find the same strength of effect.

Pregnancy outcomes

Vitamin D deficiency has been linked to gestational diabetes, preeclampsia, first-trimester miscarriage, and gallbladder issues. 

Vitamin D plays a role in glucose metabolism, but research on whether low vitamin D causes gestational diabetes is mixed (3). Still, vitamin D levels are often lower in people with GD, so it’s worth checking. Evidence on preeclampsia is also mixed, but many studies suggest that levels above 30 ng/mL are associated with a lower risk, and some data suggest that supplementation later in pregnancy may be more effective than early supplementation (4, 5, 6).

If levels are low, supplementation can be useful, but it works best alongside the root habits that support vitamin D status—sun exposure, vitamin D-rich foods, and addressing absorption/metabolism issues.

Impact on baby

The baby relies entirely on the mother for vitamin D in pregnancy. 

Maternal deficiency has been associated with a higher risk of certain childhood outcomes (including asthma, neurodevelopmental concerns, and autoimmune conditions) and may affect fetal bone development (research is still emerging) (4, 7). Low vitamin D status during pregnancy has also been linked to low birth weight and an increased risk of rickets (4).

Vitamin D & Postpartum 

Vitamin D is essential during the postpartum period and while breastfeeding for maternal health and baby development. 

It’s needed for a baby’s bone health, immune function, and the prevention of rickets (62). Rickets is a softening and weakening of the bones in children caused by prolonged vitamin D deficiency, which remains a risk after the baby is born (62). 

Vitamin D also supports immune and bone health in postpartum and nursing mothers. Additionally, it’s essential for mood and mental well-being. Deficiency of vitamin D may be a risk factor for postpartum depression (63). 

Vitamin D & Breastfeeding

It’s widely recommended that mothers who exclusively breastfeed provide their infants with vitamin D, but have we ever stopped to consider why breast milk might be lower in vitamin D in the first place? 

If you are not getting enough vitamin D from sunlight and food, you cannot transfer enough vitamin D through breast milk to your baby, even if your levels are normal (8). 

This is because adequate vitamin D levels in the blood do not transfer through breast milk (8). However, vitamin D from sunlight, food, and supplements will transfer over to your baby (8)! 

One study found that breastfeeding women who took 6400 IU of vitamin D per day had optimal vitamin D levels in their blood and transferred sufficient vitamin D through their breast milk to meet their baby’s needs without requiring additional supplementation (8). 

So, if you’re planning to breastfeed, it’s a good idea to start planning how you will supply your little one with enough vitamin D, ideally through a combination of food, sunlight, and a vitamin D supplement to ensure their needs are met. 

Vitamin D needs at every stage 

Research is inconclusive about the exact amount of vitamin D needed at any stage, but most people will need to supplement with vitamin D.  Review the prenatal vitamin note to find a prenatal vitamin with more vitamin D than 400-600 IUs.

Vitamin D deficiency

Vitamin D deficiency is a global problem, with many people not getting sufficient sunlight exposure, especially those who work all day indoors and never get daytime sunlight. 

Many countries have different cut-off points for ‘adequate’ vitamin D levels, making it difficult to quantify precisely how many people experience vitamin D deficiency (4).

Risk factors for vitamin D deficiency:

  •   Living North of the line drawn from Long Beach, CA, to Atlanta, GA 
  •   Living in an area with more air pollution 
  •   Dark skin 
  •   Obesity (4)
  •   Wearing sunscreen (at all times) when outdoors 
  •   Wearing long sleeves and pants outdoors 
  •   Vegetarian/vegan 
  •   Little time spent outdoors, especially at midday
  •   Lactose intolerance (9)
  •   Smoking (4)

Limited sun exposure, sunscreen, and vitamin D deficiency

A major risk factor for vitamin D deficiency is limiting sun exposure or always wearing sunscreen when outdoors. 

Fear of skin damage has led to the overuse of high-factor sunscreen. It is important to be careful about skin damage, and everyone’s limits will be different, but your skin needs access to midday sun a few times a week to synthesize vitamin D.

And it turns out the sun isn’t all to blame for sun damage and skin cancer— your diet is a contributor, too! 

The link between vegetable oils and skin cancer

Did you know that another sneaky culprit can greatly increase your risk of skin damage and skin cancer (along with countless other diseases and issues)? 

Research shows associations between linoleic acids (found in vegetable oils such as canola, corn, and soy) and an increased risk of skin cancer (10). While correlation doesn’t prove causation, studies also show us that reducing seed oils can “dramatically reduce the risk of ultraviolet (UV) induced sunburn,” with “susceptibility to UV radiation damage of the skin is directly influenced by the amount of LA (linoleic acid) in the diet” (10)! 

This makes sense when we consider how seed oils can become rancid; similarly, they can cause DNA damage throughout the body, including the skin, especially when exposed to heat, such as sunlight, leading to cancer (11). 

Keep in mind: while linoleic acids are the most prone to oxidation of all oils, the more unsaturated a fat is, the more prone it is to oxidation, while naturally saturated fats (i.e., animal fats and coconut oil) do not have the same damaging and dangerous effect in the body (12). 

Learn more about which oils to choose and which to limit during pregnancy here! 

How to safely get vitamin D from the sun

Maximize more D intake in less time

The best time to get vitamin D from the sun is at its highest point in the sky, which is midday (especially during the summer months), when the UVB rays responsible for vitamin D production are most intense (13, 14). 

Spend 15-30 minutes in the sun.

Fifteen minutes in the hot summertime sun and at least 30 minutes in the wintertime when the rays are less intense (15, 16). If you have darker skin (either you’re someone who gets a tan easily or you were born with darker skin), you will need more time in the sun to get enough since having more melanin blocks the sun’s UVB rays, which is one reason why those with darker skin are at a higher risk of vitamin D deficiency than those with fair skin (17). 

The good news is that by maximizing your time in the sun when UVB rays are at their peak, you can get your vitamin D without increasing your risk of skin damage or melanoma (14). You can even use the D-minder app to help you make sure you’re getting enough vitamin D based on your skin and location. 

If you are planning to spend more time in the sun (>30 minutes), stay in the shade, cover up with UV-protective clothing and a hat, or wear a mineral-based, paraben-free sunscreen!

Increase your antioxidant intake.

In addition to reducing your risk of sun damage by limiting your linoleic acid intake as much as possible, you can increase your intake of astaxanthin, which research has found to have anti-aging and anti-cancer effects by reducing the effects of harmful UV rays (18, 19). Foods high in astaxanthin include salmon, algae, shrimp, lobster, crabs, and other seafood.

Vitamins A, C, and E also act as sun and skin-protective antioxidants as well, so load up on your citrus and whole food fats, like butter, nuts, avocados, and full-fat dairy (20).

Vitamin D-rich foods

As noted, the primary source of vitamin D is sunlight, and it is not found in many foods. The best dietary sources are oily fish like trout and salmon.

(Table adapted from National Institutes of Health 2021)

Vitamin D testing

By testing your vitamin D levels (25-hydroxy vitamin D, or 25-OH vitamin D), you can fine-tune how much you need to supplement, working with your doctor and registered dietitian. I highly recommend this.

While you will see a level of 30 ng/ml (75 nmol/l) is sufficient, research indicates pregnant people should be closer to 50 ng/ml (125 nmol/l) (24).

You can also order an at-home vitamin D test kit.  

Do I need to supplement with vitamin D?

You’ve probably already gathered from above – yes, but there is a bit more to it than that. 

Find a prenatal vitamin that contains vitamin D3 (cholecalciferol). Although many of you reading this will need more than even what the Endocrine Society recommends (1500 – 2000 IU/day), taking a prenatal vitamin with at least 1000 IU is strongly recommended. 

A double-blind, randomized clinical trial found that 4,000 IU/day of vitamin D supplementation was safe and the most effective in achieving sufficient vitamin D levels in all women, regardless of race or geography (25). 

If you can, get your levels tested before and during each trimester of your pregnancy, including the fourth trimester.

The good news is that vitamin D supplements are relatively cheap! If your prenatal vitamin doesn’t contain vitamin K2 or phylloquinone, then it is recommended that you find a D3 supplement with K2.  See some recommendations next.

Vitamin D supplement recommendations

Help! My vitamin D is still low despite supplementation. What could be the problem? 

It can be frustrating if you’ve had chronically low vitamin D levels despite supplementing. But often, the key to low vitamin D isn’t just adding more vitamin D; it’s addressing the contributing factors that led to the low vitamin D in the first place. 

Other potential causes of low vitamin D

Low magnesium

Magnesium is needed to move vitamin D around in the blood and to activate vitamin D or convert it from its storage form to active form, and this can only happen when you have enough magnesium (26, 27). Magnesium deficiency can also reduce active vitamin D (1,25-dihydroxyvitamin D) levels and impair parathyroid hormone response (26). 

If you’re trying to address a vitamin D deficiency without also making sure your magnesium levels are adequate. With over half of the population in the US not getting enough magnesium each day and with magnesium needs being higher during pregnancy, it’s a good idea to pay more attention to your magnesium intake during pregnancy and get your levels checked in an RBC magnesium test and/or HTMA to determine if you already have a magnesium deficiency contributing to vitamin D deficiency (28, 29, 30). 

Having higher body fat

Since vitamin D is fat-soluble, people with higher body fat will store it in fat cells, leading to less circulating in the blood. People with obesity need higher vitamin D intake to maintain adequate levels and/or correct a deficiency (31). 

So, being obese reduces your body’s ability to convert vitamin D and circulate it, and reduces the effectiveness (32, 33). If obesity is a risk factor for you, this means you have a higher chance than average of being vitamin D deficient and responding poorly to supplementation, which means you will need a targeted protocol for assessing and ensuring your levels are adequate during pregnancy. 

Chronic infections and inflammation

Bacterial infections may cause dysregulated vitamin D metabolism (34). Chronic infections might include chronic Lyme disease, mycotoxin-related illness, and Epstein-Barr virus, which has been found to inactivate vitamin D receptors (35, 36). It’s best to work with a functional practitioner to address root issues and treatments if you know or suspect you have one of these or another. 

Your genetics

Some studies show that genetic variants, including those in VDR, CYP2R1, CYP27B1, and GC, may affect the benefit of vitamin D supplementation for each individual (37, 38, 39). 

Not eating enough animal foods and animal fats

Micronutrients needed for vitamin D synthesis and use in the body include cholesterol, magnesium, vitamin A, and vitamin K (40, 41). These are all found in animal foods, so if you have a low intake of foods high in these nutrients, your vitamin D metabolism will be impaired. Review our vegetarian note here for more information. 

Poor gut health

An imbalanced gut microbiome is associated with lower vitamin D levels, but increasing beneficial bacteria has been shown to raise vitamin D levels (42). Gut health is a key foundation for overall health, fertility, and pregnancy, and if your gut microbiome is out of balance, your vitamin D levels will likely remain out of balance as well. 

For more on how to support gut health during pregnancy, read on here. 

Conditions that affect nutrient absorption, such as celiac disease, Crohn’s disease, and Cystic Fibrosis, all reduce your body’s ability to absorb vitamin D (43).  

Poor bile flow

Poor bile flow reduces your ability to absorb fat-soluble vitamins (vitamins A, D, E, and K) since bile is responsible for breaking down fat, but you can increase bile and support bile flow by supplementing with bile salts, which have been found to increase vitamin D levels (42). You can also support increased bile flow by eating plenty of fats (cholesterol, especially), beets, and glutamine-rich animal foods, such as meats, seafood, and dairy, as well as choline from eggs and liver (44, 45). 

High glyphosate exposure

People can be exposed to glyphosate through diet, skin contact, and inhalation of airborne particles. Fruits, fruit juices, vegetables, and cereals all contain this herbicide (46). Glyphosate reduces vitamin D by reducing both the CYP27A1 gene and other minerals needed for vitamin D metabolism (47, 48, 49). Buy organic produce if possible, especially the dirty dozen. 

Hyperparathyroidism

Hyperparathyroidism is caused by abnormal parathyroid gland growth and elevated parathyroid hormone secretion, which, among many other symptoms, can lead to low vitamin D levels. It is most common in women over 60 years old, but it can also occur in younger people (especially women) (50). 

Some or many of these might be factors in your own situation, and it’s ideal to work with a practitioner who can dive into your health history to find what could be causing your deficiency rather than just trying to increase supplementation of vitamin D alone. 

Other lab values to assess when addressing vitamin D include: 

  • Active D and storage D: 25-hydroxy vitamin D (vitamin D stores, most commonly used), and if suspected high active vitamin D levels, 1,25-dihydroxy vitamin D (active form, less commonly used). Usually, only storage vitamin D is tested, but it is possible that you may have low-storage vitamin D and high-active vitamin D, especially if you’re supplementing vitamin D and have trouble converting vitamin D. 
  • Ionized Calcium: unbound calcium that is not bound to protein and is the body’s most accurate measure of calcium (51). 
  • RBC magnesium: a more accurate indicator of magnesium levels in the cells (only 1 percent of magnesium is actually in the blood) (29). An HTMA (hair test) can also provide good insight into intracellular magnesium levels. 
  • Parathyroid hormone: Vitamin D deficiency is common in hyperparathyroidism (52). High PTH levels can lead to high 1,25(OH)2D, low bone mineral density, increased risk of fractures, and osteoporosis, and supplementing with vitamin D often leads to low or suppressed PTH (53, 54). 

Start here with increasing vitamin D levels 

Like most nutrients, vitamin D works best with consistency. So, do your best to consume vitamin D–rich foods regularly (fatty fish, egg yolks, and full-fat dairy if you tolerate it). 

Then use these three levers to help your body absorb and use vitamin D more effectively:

  1. Optimize magnesium levels : Prioritize magnesium-rich foods (pumpkin/chia seeds, almonds/cashews/peanuts, spinach, beans, edamame). If needed, add magnesium via a supplement (multi-form options like Smidge), topical magnesium (lotion/deodorant), Epsom salt baths, and/or magnesium powder in your daily mineral mocktail
  2. Eat more animal foods and fats: Vitamin D metabolism relies on nutrients found mostly in animal foods—especially cholesterol, vitamin A, and vitamin K2 (40, 41). Focus on egg yolks, full-fat dairy/cheese, grass-fed beef, and (if you tolerate it) small amounts of liver/organ meats; include fermented foods for K2 like miso, sauerkraut, or natto. Cholesterol matters, too, because vitamin D made from sunlight is synthesized from cholesterol (56).
  3. Go outside mid-day. : Start by going outside mid-day without sunscreen or sleeves (if it isn’t winter).

Can you get too much vitamin D?

Yes! 

Too much vitamin D is toxic, another reason to test your levels before reaching for really high-level supplements.

When vitamin D is truly excessive, it can:

  • Raise calcium too high (hypercalcemia) in both mom and baby (4)
  • Cause symptoms like vomiting, muscle weakness, dehydration, and kidney stones (57)
  • Increase risk of soft tissue calcification (potentially via potassium wasting) (58)
  • Deplete magnesium, which vitamin D relies on for metabolism (59)

That said, studies using 4,000–5,000 IU/day have not shown hypercalcemia or tissue calcification, but vitamin D works best (and safest) when you’re also getting adequate supportive minerals that help your body utilize it  (60, 61). 

Can you get too much sun?

Excessive sun exposure won’t lead to toxic levels of vitamin D, but it definitely isn’t good for your skin. It is possible that frequent tanning beds can lead to toxic vitamin D levels, but they are an all-around bad idea anyway, so best to avoid them. 

Written by: Claire Gilmore, MSCN, CNS, LDN, and Ryann Kipping, MPH, RDN, LDN