In this special Folic Acid Awareness Week episode of The MotherToBaby Podcast, host and genetic counselor Chris Stallman sits down with Dr. Elisabeth Marnik, PhD—a biomedical scientist, mom, and science communicator better known as @ScienceWhizLiz on Instagram. Together, they unpack the science behind folic acid, its critical role in early pregnancy, and why it’s one of the most important (yet misunderstood) nutrients for people of childbearing age.

From real talk on neural tube defect prevention to busting social media myths like “folic acid causes tongue ties” or “MTHFR mutations mean folic acid isn’t safe,” this episode is packed with science-backed insights and practical guidance for both healthcare providers and future parents alike.

🧠 Key Topics Covered:

• What folic acid is and why it matters for pregnancy
• The difference between folic acid and folate
• When folic acid is most critical (hint: before you know you’re pregnant!)
• Myths and misinformation about folic acid—especially on social media
• What the research really says about MTHFR gene mutations
• How to support patients with dietary restrictions or supplement concerns
• Why more folic acid is not always better

👩‍⚕️ Guest Bio:
Dr. Elisabeth Marnik is a biomedical scientist with a PhD from Tufts University and The Jackson Laboratory, where she studied immune system function, autoimmune disease, and vaccine response. She’s also a passionate science communicator who makes complex topics clear and relatable for thousands of followers as @ScienceWhizLiz on Instagram.

🔗 Resources Mentioned:

• Learn more about folic acid: MotherToBaby Folic Acid Fact Sheet
• Contact a MotherToBaby specialist (free & confidential):

  • Call: 866-626-6847
  • Text: 855-999-3525
  • Chat: MotherToBaby.org

• Follow Dr. Marnik: @ScienceWhizLiz on Instagram

💬 Have a Question or Topic Idea?
We’d love to hear from you! Email us at contactus@mothertobaby.org.

📱 Subscribe & Listen On:
Spotify | Apple Podcasts | Audible | iHeartRadio | Or wherever you get your podcasts

💛 Support Our Work:
Help us keep this podcast free and accessible. Join our monthly giving community, Encircle, to support parents and families with trusted pregnancy and breastfeeding information. Learn more at MotherToBaby.org/Donate

In this episode of the MotherToBaby Podcast, host and genetic counselor Chris Stallman welcomes Dr. Emily Caffrey, a certified health physicist at the Health Physics Society and the University of Alabama at Birmingham. Together, they dive into one of the most frequently asked topics: how radiation exposure may impact breastfeeding.

Dr. Caffrey explains the difference between ionizing and non-ionizing radiation, details how imaging procedures like X-rays, CT scans, and MRIs interact with the body, and addresses concerns around contrast agents and radioactive tracers. The episode also covers what breastfeeding women working around radiation should know, including practical safety tips and case-by-case considerations.

Key Takeaways:

• Diagnostic imaging procedures do not make breast milk radioactive or require stopping breastfeeding
• Some radioactive tracers or therapeutic treatments may require temporary or permanent changes to breastfeeding plans, depending on the specific agent and dose
• Always inform your healthcare provider that you’re breastfeeding and ask questions about any upcoming procedures
• Expert help is available—don’t rely on internet searches alone

Resources mentioned in this episode:

• MotherToBaby.org
• Health Physics Society
• American College of Radiology Guidelines
• Call 866-626-6847 or text 855-999-3525 to speak with a MotherToBaby specialist

🎧 Subscribe to the podcast and never miss an episode!

By Al Romeo, RN, PhD, MotherToBaby Utah

If you are pregnant or breastfeeding, you might wonder if it is safe for you to go to the nail salon. After all, there are chemicals in nail treatments, and (let’s face it) nail salons often smell like they could be toxic! But are they?

What’s in nail treatments? And could they be harmful if I’m pregnant or nursing?
Common nail products include nail polish and types of acrylic nails including gels, liquids, and powders. There are a few ingredients that are commonly found in those products, including:

• Dibutyl phthalate (DBP)
• Toluene
• Formaldehyde
• Camphor
• Paraffin
• Methacrylic
• Acetone
• Acetonitrile

The names of those ingredients may sound scary, but let’s look at each of them.

Dibutyl phthalate (DBP) is used in nail polish to make the polish more flexible and less likely to crack or break. Small amounts have been found in humans. Those small amounts are not expected to cause increased chances of problems for the pregnancy or breastfed baby based on the available research.

Toluene is a solvent that is used to thin nail polish so it goes smooth after being painted on with a brush. Solvents are known to be harmful to the nervous system. Sniffing or huffing spray paint, glue, and gasoline can cause dizziness and fainting in addition to damaging brain cells. But when it comes to nail treatments, the amount of toluene that is absorbed through the skin or inhaled from applying nail polish to finger and toe nails is small and not expected to increase the chance of problems for your pregnancy or breastfed baby.

Formaldehyde is used to harden nail polish. Nail salons might also use formaldehyde to disinfect nail care tools. Some people may be allergic to formaldehyde, even in the small amounts found in nail polish. Women with those allergies should use nail care products without formaldehyde and ask about its use in nail salons. Our bodies make formaldehyde and it can be found in healthy foods, such as apples. Just as too much water or oxygen can be dangerous for our bodies, too much formaldehyde can be a problem. However, the amount in nail polish is small and the amount that would be absorbed through the skin, nails, and from the fumes is also very small. That small amount is not expected to cause problems for your pregnancy or breastfed baby.

Camphor is also used to make nail polish soft or flexible and give it a pleasant odor. Camphor is found in some pain-relieving products that are applied to the skin. The amount of camphor in nail polish is far less than in those pain-relieving creams. Based on the limited information available, the use of camphor on the skin has not increased risks for a pregnancy or breastfed babies.

Paraffin is a mineral oil used in cosmetics and ointments to soften the skin. It isn’t part of the nail polish or remover, but your hands or feet might soak in it as part of the manicure or pedicure. As an oil, it mainly stays on the skin and isn’t absorbed into the bloodstream. The small amount of paraffin that is expected to get absorbed into the skin is not expected to increase the chance of problems for your pregnancy or breastfed baby.

Methacrylate is a chemical in acrylic nails. Not much of the methacrylate is left after it reacts with other chemicals to form the acrylic nails. However, the small amount that is left in the acrylic nails could cause irritation, redness, and swelling in the tissues under and below the nails. The small amount of methacrylate that is expected to be absorbed by the skin or lungs from using acrylic nails is not expected to cause an increased chance of problems for your pregnancy or breastfed baby.

Acetone is a solvent used in nail polish removers. Acetone, when ingested, can cause problems in the body. The small amount of acetone that is expected to be absorbed by the skin or lungs when it is used to remove nail polish is small and not expected to cause an increased chance of problems for your pregnancy or breastfed baby. After using nail polish remover, you might want to wash your hands or feet to reduce the amount that is left on the skin that could be absorbed.

Acetonitrile is another solvent used for removing artificial nails. It is less commonly used in cosmetics than acetone. The small amounts that are expected to be absorbed through the skin, nails, or lungs are not expected to increase the chances of problems for your pregnancy or breastfed baby.

But what about the smell?
The smell in nail salons is caused by the chemicals in the various treatments they offer. If there is good air flow and plenty of fresh air, then it is not likely that much of the chemicals will get into the body by breathing the fumes. But if you have headaches, dizziness, or nausea while around nail care products, take a break and get some fresh air outside.

So what’s the take-away?
Go ahead, pamper yourself with pretty nails! Using these cosmetic products as part of routine nail treatments should not cause you any concern, as there are no known increased risks for your pregnancy or your breastfed baby.

If you have questions about exposures during pregnancy or breastfeeding, contact an expert at MotherToBaby. You can reach us by phone at 866-626-6847 or by text at 855-999-3525. You can also email or live chat with us by visiting https://MotherToBaby.org.

Alfred Romeo, RN, PhD, is a nurse and health educator. He has been with MotherToBaby for fifteen years, has served as the chair of various committees, and has served in many roles on the Board of the Organization of Teratology Information Specialists (OTIS)/ MotherToBaby. His experiences include working as a nurse in newborn intensive care units, training medical homes to improve services for children with special needs, and training young adults with disabilities in leadership and advocacy.

By Bethany Kotlar, MPH, Teratogen Information Specialist, MotherToBaby Georgia

Anyone who has been pregnant knows it’s no walk in the park. From the intense nausea, vomiting, and strange cravings of the first trimester, to all the aches and pains of the third trimester, carrying a baby can feel like a marathon! It’s no wonder pregnant women look high and low for any form of relief. Two questions we are asked frequently here at MotherToBaby are-“Can I get a massage?” and “Is acupuncture safe during pregnancy?”

Want a massage? Here’s the rub…

At 38 weeks pregnant, my feet hurt, my back hurt, sometimes it felt like even my hair hurt! All I wanted was someone to knead all my aches and pains away. I wanted a massage, so being a MotherToBaby information specialist, I set out to research massage during pregnancy. On the plus side, studies have shown that massage can benefit pregnant women. Massage during pregnancy not only helps with those aches and pains, it has also been shown to decrease stress, help ease symptoms of depression, and increase feelings of wellbeing. Sounds pretty good, right?

So, should you run out and book that massage right this second? Not too fast – there are a couple of things to keep in mind. The safety of massage in the first trimester hasn’t been studied well. Because of this, some massage therapists and medical professionals recommend avoiding massage during the first three months of pregnancy. If you do decide to get a massage in the first trimester, it’s better to choose a massage that doesn’t use heat (like a hot towel or hot stones), especially around the stomach area or lower back. This is because overheating during pregnancy can increase the risk of birth defects. See our fact sheet on hyperthermia for more information: https://mothertobaby.org/fact-sheets/hyperthermia-pregnancy/.

When getting a massage at any point in pregnancy, choose a massage therapist who is trained to work with pregnant women. These therapists will know to avoid pressure in certain areas and will also know which places can get especially sore when you’re carrying a baby. It’s also best to avoid massages that apply a lot of pressure, like deep tissue massages, since these haven’t been well studied. Finally, make sure your therapist knows whether you have any allergies to certain oils and that they are using products that are not known to increase risk during pregnancy.

If you’re getting a massage in late pregnancy, the massage therapist may offer to apply pressure to certain points on your body that are thought to bring on labor. Studies have not shown that this actually induces labor, but to be on the safe side it’s better to wait until you are at least 39 weeks pregnant to try.

What about acupuncture? A few points…

Acupuncture is a technique in which a trained practitioner inserts very small needles into certain points of the body. Stimulating these points is thought to help with pain, indigestion, infertility, and much more. Acupuncture is usually recommended to pregnant women to help with nausea and vomiting, and to relieve pain.

The available studies do not show an increased risk of birth defects or other pregnancy problems when pregnant women use acupuncture. The most common risk with acupuncture is to feel a little pain when the needles are placed. While the risk from acupuncture is low, studies also haven’t shown that acupuncture necessarily helps with nausea, vomiting, or pain during pregnancy.

If you do decide to get acupuncture during pregnancy, be sure to find a trained practitioner. You may want to find a practitioner with experience working with pregnant women as well. Make sure your practitioner is not re-using needles from other clients as this may increase the risk of certain infections. Like massage, there are a few acupuncture points that are thought to bring on labor. Studies haven’t shown that this will bring baby earlier, but it’s best to avoid these points unless you are at least 39 weeks pregnant.

As with any treatment, it’s best to talk to your healthcare provider before starting. Remember, we’re here to help too! If you have any questions about massage, acupuncture, or any other exposure during pregnancy, you can contact an expert at MotherToBaby by calling 866-626-6847, texting 855-999-3525, or by live chat or email at https://mothertobaby.org//a>.

Bethany Kotlar, MPH, is a teratology information specialist with MotherToBaby Georgia. She holds a Masters in Public Health specializing in Maternal and Child Health, and is a Certified Childbirth Educator. She enjoys exercising, traveling and Netflix.

About MotherToBaby

MotherToBaby is a service of the Organization of Teratology Information Specialists (OTIS), suggested resources by many agencies including the Centers for Disease Control and Prevention (CDC). If you have questions about exposures during pregnancy and breastfeeding, please call MotherToBaby toll-FREE at 866-626-6847 or try out MotherToBaby’s new text information service by texting questions to (855) 999-3525. You can also visit MotherToBaby.org to browse a library of fact sheets about dozens of viruses, medications, vaccines, alcohol, diseases, or other exposures during pregnancy and breastfeeding or connect with all of our resources by downloading the new MotherToBaby free app, available on Android and iOS markets.

By Beth Conover, APRN, Beth Kiernan, MPH, and Al Romeo, RN, PhD – MotherToBaby Teratogen Information Specialists

From images of buildings destroyed by high wind to families stranded on roof tops by flooding (and the rising death toll), to say that hurricanes can be devastating would be an understatement. At MotherToBaby, we receive questions from moms and moms-to-be in storm-affected areas regarding the potential exposures they may be experiencing as powerful forces of nature wreak havoc on their homes and communities. We just wanted to let you know – MotherToBaby is here for you, your unborn child and your baby. We can answer your questions about the known facts surrounding these potential natural disaster-related exposures during your pregnancy or while breastfeeding. You can call us toll-free (866-626-6847), text us (855-999-3525), chat with us online or send us an email via MotherToBaby.org. Here are some common questions we’re getting and answers to help provide you with as much information as possible during this difficult time:

I’m pregnant and worried about possible things associated with a hurricane that might harm my baby.

Being pregnant can be a stressful time, without having the additional concerns of a natural disaster like a hurricane! However, remember that many pregnant women have been in similar situations and had normal pregnancy outcomes and healthy babies. There are some common sense things you can do to keep you and your baby safe:

• Continue to eat nutritious food…even if it is from a can.
• Drink safe fluids…bottled or boiled water, for example.
• Rest whenever you can and get the proper amount of sleep.
• Don’t overdo heavy lifting.

MotherToBaby has a fact sheet on pregnancy during natural disasters: https://mothertobaby.org/fact-sheets/natural-disasters/

I am worried that there might be industrial chemicals released into the air and water after a hurricane. Will this present a risk to my pregnancy?

Local industry may be affected by heavy rain, wind, tornadoes, and flooding from a hurricane. Various chemicals (carbon monoxide, ammonia, chlorine, hydrochloric acid, sulfuric acid) can be released into the air or flood waters from damage to those industrial sites. Local authorities will often notify the public about any chemical spills and explain what the public should do to avoid or reduce exposures (staying indoors, for example). If you think the smell is natural gas, go to a safe area away from the smell and call 911 or the local gas company.

You may want to start taking notes on paper or making some mental notes in case you have questions about how those chemicals might affect your pregnancy or your breastfed baby. Contact your health provider or MotherToBaby and be prepared to answer these questions:

• The names of the chemicals
• New or increased symptoms (vomiting, headache, dizziness, etc.)
• How you came into contact with the chemicals (breathing, touching, in your mouth or eyes, etc.)
• How long you were in contact with the chemicals

Fortunately, exposures like these are often small enough that they don’t present a risk to the pregnancy. For example, just smelling something may not result in a significant amount being passed to the baby. However, each chemical is different, so be sure to ask about any of your concerns.

I’m worried about whether my drinking water is safe…can I get an infection from it that could harm my pregnancy?

Infections are common after a natural disaster. These can include bacterial infections and parasites from dirty water. Many of these infections are important to treat, and you should contact your obstetrical health provider (Midwife or OB) if you think you have an infection. MotherToBaby has fact sheets on common infections and many medications used to treat them: https://mothertobaby.org/fact-sheets-parent/

All this water is resulting in a lot of mosquitoes! Not only are they unpleasant but can’t they spread infections that may harm my pregnancy? Is insect repellent safe to use in pregnancy?

You are correct that mosquitos can sometimes carry serious infections such as Zika and West Nile disease. MotherToBaby has fact sheets on these diseases and many others: https://mothertobaby.org/fact-sheets/zika-virus-pregnancy/ and https://mothertobaby.org/fact-sheets/west-nile-virus-infection-pregnancy/.

There are also some things you can do to lower your chances of being bitten by a mosquito:

• Stay indoors with proper screens during peak times of mosquito activity (usually overnight from dusk through dawn)
• Wear long sleeved shirts and pants when outdoors
• Consider using insect repellent containing an effective ingredient such as DEET or picaridin. Apply the repellent sparingly to exposed skin and outer clothing, and wash it off when you are back inside and no longer need it. MotherToBaby has a fact sheet on insect repellents at https://mothertobaby.org/fact-sheets/insect-repellents/

I’m just so stressed out by the whole situation! Our home is destroyed and we are staying in a shelter. I’ve heard from my grandmother than stress can harm the baby. Is this true?

Pregnant women often worry that stress can affect the pregnancy and cause miscarriage, premature delivery or low birth weight. Fortunately, most experts agree that moderate levels of stress are unlikely to harm the pregnancy. It’s still best to keep as calm as possible, and try to quit worrying about worrying! It’s normal to feel irritable and out of control, and to be tearful and worried. Stress can make existing medical conditions worse, so it’s important that you take care of yourself even as you are taking care of family members:

• Pay attention to your blood sugar levels and blood pressure.
• Do things to relax. Get some exercise, even if it’s just a short walk.
• Take deep breaths and think positive thoughts about your baby.

If you feel depressed, talk to someone such as your partner, a relative or friend, or a health care provider. If you have been taking medicine for mental health issues, keep taking it unless your doctor tells you to stop. It’s OK to ask for help. Treating depression and anxiety helps your baby. Check out this fact sheet for more information: https://mothertobaby.org/fact-sheets/stress-pregnancy/

The good news is that my home is still standing. The bad news is that the hurricane has caused a real mess in my home! What types of cleaning agents are safe to use while I am pregnant?

First of all, remember that you don’t need to take on everything…you are pregnant after all! Let others do the heavy lifting or handle possibly toxic cleaning chemicals. However, most household cleaning agents are pretty low risk. To help protect yourself and your baby, wear gloves when using cleaning agents and try to keep fresh air moving through your work area (consider a fan and open the windows).

What about mold? Hurricanes involve rain and can cause flooding…and all this water in my house has caused mold in my walls. Will this hurt me or my pregnancy?

After the rain has stopped and flood waters go down, mold may start to grow in damaged homes, cars and businesses. Whether you are young or older, pregnant or not pregnant, mold exposure can make you sick. However, there is no proof that exposure to mold increases risks for birth defects or pregnancy complications. Companies can help with the cleanup, but you can do some on your own if you take the right precautions. MotherToBaby has a fact sheet on mold: https://mothertobaby.org/fact-sheets/mold-pregnancy/

Here’s how to learn about cleaning mold in your home: https://www.epa.gov/mold/mold-cleanup-your-home

If you must live or work in a place where mold is being removed, try to open windows so that your exposure is less to airborne mold spores. If you can sleep somewhere else at night and just return to clean up for a short period each day, that may be best for you.

What if I am breastfeeding my baby? Do I need to worry about exposures or should I use formula?

Breastfeeding is good for you and your baby! It is even more important when there are concerns that the water used to make formula may be contaminated. Be sure to keep yourself well hydrated, and use common sense about your exposures. MotherToBaby has a fact sheet on breastfeeding in a natural disaster: https://mothertobaby.org/fact-sheets/breastfeeding-natural-disaster/

Here is another website to check out:

Centers for Disease Control and Prevention:

https://www.cdc.gov/reproductivehealth/emergency/safety-messages.htm

More about MotherToBaby

MotherToBaby is a service of the Organization of Teratology Information Specialists (OTIS), suggested resources by many agencies including the Centers for Disease Control and Prevention (CDC). If you have questions about exposures resulting from a natural disaster during pregnancy and breastfeeding, please call MotherToBaby toll-FREE at 866-626-6847 or try out MotherToBaby’s new text information service by texting questions to (855) 999-3525. You can also visit MotherToBaby.org to browse a library of fact sheets about dozens of viruses, medications, vaccines, alcohol, diseases, or other exposures during pregnancy and breastfeeding. MotherToBaby has been able to embark on new outreach efforts to reach underserved populations and launch new communication technologies through a cooperative agreement with the U.S. Health Resources and Services Administration, as well as through the generous donations made by the public.