From a functional medicine perspective, postpartum cavities are not random. They are a predictable outcome of profound hormonal shifts, nutrient depletion, sleep disruption, and changes in oral and gut microbiomes that occur during pregnancy and the postpartum period. Understanding why postpartum cavities happen is the first step toward preventing and reversing them.

What Are Postpartum Cavities?

Postpartum cavities refer to tooth decay that develops during the months following childbirth. Some women notice sensitivity or pain shortly after delivery, while others discover postpartum cavities at their first dental visit after having a baby. In many cases, these cavities progress quickly and seem disproportionate to a woman’s oral hygiene habits.

This is often shocking, especially for women who brushed, flossed, and saw a dentist regularly before pregnancy. But postpartum cavities are usually less about hygiene and more about other aspects of biology.

Why Postpartum Cavities Are So Common

There is a perfect storm of factors that contribute to postpartum cavities, and they often overlap.

1. Hormonal Changes

Pregnancy and the postpartum period involve dramatic fluctuations in estrogen and progesterone. These hormones directly affect saliva production, blood flow to the gums, and the balance of bacteria in the mouth. Low estrogen postpartum can reduce saliva, and saliva is one of your primary defenses against cavities. Reduced saliva means acids linger longer on teeth, increasing the risk of postpartum cavities.

2. Mineral Depletion

Pregnancy places enormous demands on a woman’s mineral stores, particularly calcium, phosphorus, magnesium, and trace minerals. If these minerals are not adequately replenished postpartum, the body prioritizes survival and lactation over tooth remineralization. This creates a biological environment where postpartum cavities can form rapidly.

For several reasons, I usually recommend that my patients supplement with 1,000 mg of encapsulated calcium citrate beginning at 20 weeks gestation due to several studies indicating reduction in hypertension and pre-eclampsia risk in pregnant women. I recommend this practice continue for my patients who breastfeed their babies.

3. Changes in the Oral Microbiome

The oral microbiome shifts during pregnancy, often favoring more acid-producing bacteria. These changes don’t immediately reverse after delivery. When combined with lower saliva flow and mineral depletion, this microbial imbalance strongly contributes to postpartum cavities.

4. Increased Snacking and Nighttime Eating

Many new mothers eat more frequently (as well they should), often late at night (again, as well they should), to support breastfeeding and manage exhaustion. Unfortunately, frequent eating without immediate/adequate brushing increases acid exposure on teeth. This pattern is a significant driver of postpartum cavities, even when total sugar intake is not excessive.

Need an easy fix Pop a xylitol containing breath mint or chew a piece of xylitol-containing gum. Studies show that xylitol reduces the growth of cavity-forming oral bacteria. Xylitol consumption is considered safe during pregnancy (but check with your doctor) and studies even show that the children mothers who consume xylitol when pregnant themselves have lower risk of cavities.

Looking for an ultra-natural option? Underbrush Remineralizing Gum is a chewing gum made from natural tree sap with all natural ingredients and even nano-hydroxapatite which remineralizes teeth and stops decay.

5. Sleep Deprivation and Stress

Chronic stress and sleep deprivation elevate cortisol, impair immune function, and reduce the body’s ability to repair tissues. Teeth are living structures, and their ability to repair micro-damage is compromised in high-stress states. This is another underappreciated contributor to postpartum cavities.

I’ve said it before and I’ll say it again: sleep when your baby sleeps.

Why Traditional Dental Advice Falls Short

Most conventional explanations for postpartum cavities focus narrowly on brushing, flossing, and sugar intake. While these matter, they do not explain why so many women develop postpartum cavities despite good oral hygiene.

A functional medicine approach looks upstream. Postpartum cavities are a sign of systemic imbalance, not just local tooth decay. Addressing only the teeth without supporting the whole body often leads to recurring problems. Once again, a tooth problem is a gut problem, and we need to look inward to solve outward signs of toothe decay.

The Role of the Gut in Postpartum Cavities

It may surprise you to learn that postpartum cavities are closely tied to gut health. The gut microbiome influences mineral absorption, immune regulation, and inflammation throughout the body, including in the mouth.

Antibiotics during labor, C-sections, stress, and sleep deprivation all disrupt gut health postpartum. Poor mineral absorption and systemic inflammation increase susceptibility to postpartum cavities. Supporting gut healing is therefore a critical part of addressing postpartum cavities holistically.

Want to learn more about supporting your gut health Check out all the latest articles here.

Breastfeeding and Postpartum Cavities

Breastfeeding itself does not cause postpartum cavities, but it does increase nutritional demands. Producing breast milk requires significant amounts of calcium, magnesium, iodine, and fat-soluble vitamins. If intake does not meet demand, maternal stores are depleted, increasing the risk of postpartum cavities.

Based on his research in communities with little-to-no dental decay, Dr. Weston A Price (dentist) suggests a diet rich in whole foods, healthy fats, raw dairy and properly prepared (soaked, fresh-milled) grains. He also advocates for eating organ meats, bone broths, wild fish and fermented foods and avoiding processed foods. I will acknolwedge, postpartum is a time like no other to rely on prepared foods to support stress levels during the postpartum period. However, an ounce of prevention is worth a pound of cure. If you’re pregnant, check out this post about prepping nutritious meals for postpartum so that you are freed from so much reliance on food manufacturers to support your postpartum nutrition (seeing as they tend to be more concerned with their own profits than with your health, including your dental health.)

Nutrients That Protect Against Postpartum Cavities

One of the most powerful ways to prevent and heal postpartum cavities is by replenishing key nutrients.

• Calcium and phosphorus are foundational for tooth structure.
• Magnesium supports proper calcium utilization.
• Vitamin D regulates mineral absorption.
• Vitamin K2 directs calcium into teeth and bones rather than soft tissues.
• Vitamin A supports enamel integrity and immune defense.

Many women with postpartum cavities are deficient in one or more of these nutrients, even if they eat a generally healthy diet. All of these nutrients can be found in quality animal foods, like slow cooked meat on the bone. (And what postpartum mama doesn’t love a good crockpot meal?)

Blood Sugar Balance and Postpartum Cavities

Blood sugar instability is another overlooked contributor to postpartum cavities. Postpartum insulin resistance, sleep deprivation, and stress can all lead to blood sugar swings. Elevated blood sugar feeds acid-producing oral bacteria, increasing the likelihood of postpartum cavities.

Eating balanced meals with adequate protein, fat, and minerals helps stabilize blood sugar and reduce cavity risk.

What You Can Do If You Already Have Postpartum Cavities

If you’ve already been diagnosed with postpartum cavities, please know that this is not the end of the story. Dental treatment is sometimes necessary, but it should be paired with systemic support.

Addressing mineral repletion, gut health, hormone balance, and stress can slow or halt the progression of postpartum cavities and reduce future risk. Many women find that once these underlying issues are addressed, they stop developing new postpartum cavities altogether.

Practical Daily Habits to Support Oral Health Postpartum

Gentle but consistent oral care matters. Check out these tips:

• Use a soft toothbrush, particularly an electric one with a rotary head. We use the Oral B Pro 1000
• Avoid aggressive brushing (much easier with an electric brush), and consider remineralizing tooth powders or pastes. Rinsing with water after nighttime feeds or snacks can reduce acid exposure and help prevent postpartum cavities.

Avoid constant sipping on sweetened beverages, including juice and sweetened coffee drinks. Even “natural” sugars contribute to postpartum cavities when exposure is frequent.

Preventing Postpartum Cavities in Future Pregnancies

If you’ve experienced postpartum cavities once, you may be at higher risk in subsequent pregnancies. The good news is that prevention is possible.

Entering pregnancy with strong mineral reserves, supporting gut health, managing blood sugar, and prioritizing postpartum nourishment can dramatically reduce the risk of postpartum cavities the next time around.

Final Thoughts on Postpartum Cavities

If you are dealing with postpartum cavities, you are not alone, and you are not broken. This is a common and understandable outcome of the intense demands placed on the body during pregnancy and postpartum.

With the right support, education, and nourishment, it is absolutely possible to protect your teeth, restore balance, and move forward with confidence. Postpartum cavities are not just a dental issue—they are a whole-body message asking for care, rest, and replenishment.

And that message deserves to be heard.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

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Reminder: The information on this post or anywhere else on this blog or other writing is purely educational, and is not intended to diagnose, treat, prevent, or cure any health condition.

The post Postpartum Cavities appeared first on Dr. Alexandra MacKillop.

Things to Consider When Meal Prepping for Pregnancy

There are two types of meal prep you want to consider when getting food ready for yourself. This could include both 1) meal prepping for yourself when pregnancy leaves you too exhausted to pack a lunch and 2) meal prepping for postpartum so that food and nutrition is an easy, streamlined process.

The good news is that both of these meal prep goals involve the same strategies! Meal prepping for pregnancy or postpartum both involve the creation of easy, nutritious, low-toxin meals that are freezer-friendly and reheat with ease.

Two Types of Meal Prep

When meal prepping for pregnancy, you want to make two things happen. The first, is you need to make sure that you have something quick and easy on hand to grab and go when you only have a few minutes for a lunch or late dinner. The second is that you want a real, hearty meal available for when the whole family is sitting down to dine but you don’t have the time or energy to get out for groceries, assemble meals, and cook them all while holding a hungry, snuggly, and possibly crying newborn.

Whether you’re a busy pregnant mama or looking to the future after your little one arrives, you need both meals for yourself to grab and go as well as something that you don’t need to think about when it comes to a sit-down meal for everyone else, too.

Toxins When Meal Prepping for Pregnancy

Nobody wants to think that their food can be harming them, and the good news is that it isn’t, most of the time. Most foods are nutritious and beneficial to include in a well-rounded healthy diet. However, we can run into a few problems when considering toxins with our food, especially considering toxins that may be added to the food, or that may leach into the food through packaging.

Pesticides and Preservatives

The heart behind these food toxins is actually good. Of course we want pests to stay away from our crops, and we want our food to be protected from rot and degradation! However, the chemicals involved in accomplishing these tasks actually harm our health in doing so. In order to make sure that you family has the healthiest meals possible whether you’re eating for two or cooking when your arms are full, look for:

• Foods without preservatives addedd, like sodium benzoate, EDTA, potassium sorbate, nitrates and BHA, BHT or TBHQ
• Pesticides added to non-organic food and animal feed are a huge problem. Look for organic labeling whenever available.

Note: Other food additives, beyond preservatives, also can be harmful. I recommend avoiding artificial sweeteners like aspartame an acesulfame potassium, natural flavors, food dyes, and carageenan to name a few.

The good news is that apart from pesticides, if you are choosing whole foods to cook and meal prep with, you really don’t need to worry about the other additives.

Toxic Packaging Materials

Now, the downside about a grab-and-go meal strategy is that the packaging we sometimes use to do so can also pose risks to our health. Materials like plastic and aluminum leach into our food and can affect neurodevelopment of baby, hormone balance, cancer risks and more. Microplastics have been found in everything from the brain to the placenta, and it’s never something we want more of. Instead of disposable aluminum trays or plastic containers, consider the following ideas:

• Stainless Steel Casserole Dishes: This is the most cost effective product I’ve found on Amazon, comes in a pack of two, and can be reused over and over again. If you stock up on 8-10, you can easily prep several dinners that will last for multiple days for a meager investment and cultivate a habit of doubling any recipes you bake or cook going forward.
• Silicone Freezer Bags: Instead of meal prepping for pregnancy in Ziploc freezer bags, consider reusable silicone ones. While silicone is not ideal for hot food applications, they are safe for cold use, and provide a similar layer of freezer protection.
• Glass Jars: The standard for food preservation is usually Ball Jars, which are available in most grocery and home improvement stores. However, if you’re not actually using them for canning, the metal lids can easily corrode and stop being usable over time. These adorable freezer jars have plastic lids (which won’t be touching your food) and hold up better for repeated use. I recommend using individual serving jars like this for meal-prepped broths and soups. They also come in neutral colors.

Meal Prepping for Pregnancy Recipes

During the postpartum period, or even if you’re meal prepping to eat these dishes during pregnancy, nutrition is more important than ever. Consider the following strategies when meal prepping for pregnancy:

1. Lower Carbohydrate (In moderation)

• Blood Sugar Stability: After childbirth, many women experience fluctuations in blood sugar levels. A lower-carb diet can help stabilize blood sugar, preventing energy crashes and promoting consistent energy throughout the day.
• Avoiding Insulin Resistance: Some women may face insulin resistance or have higher blood sugar levels during pregnancy (e.g., gestational diabetes). Postpartum, focusing on lower-carb meals can support insulin sensitivity and help with long-term metabolic health.
• Weight Management: Postpartum weight loss or maintenance can be supported by consuming fewer refined carbohydrates, which can prevent fat storage and cravings. A more balanced approach helps maintain a healthy weight without drastic spikes or drops in energy levels. While weight loss should not be a top priority postpartum, eating nourishing meals will help your body naturally level out at the rate that is most appropriate for oyu.

2. High-Quality Animal Protein

• Muscle Repair & Recovery: Childbirth is physically demanding, and the body needs to repair and rebuild muscle tissue after the exertion of labor. High-quality animal proteins (like chicken, beef, turkey, eggs, and fish) provide essential amino acids that support muscle recovery and tissue healing.
• Breast Milk Production: Protein is also critical for producing breast milk. Amino acids from protein-rich foods are the building blocks of the milk, supporting both quality and quantity for breastfeeding moms.
• Hormonal Balance: Protein helps in balancing hormones, including the ones responsible for mood regulation (like serotonin and dopamine). Postpartum hormonal shifts can cause mood swings, so supporting hormonal health with protein is crucial.

3. Complex Fiber

• Gut Health: After childbirth, many women experience changes in digestion, including constipation or slower gut motility. Complex fiber (found in vegetables, legumes, and some whole grains) promotes regular bowel movements and supports gut health, which is vital for overall health during recovery.
• Blood Sugar Regulation: Fiber helps to slow the absorption of sugars in the bloodstream, preventing sharp spikes and crashes in blood sugar. This is important for postpartum recovery, especially if the body is recovering from insulin imbalances.
• Satiety: High-fiber foods also help keep you feeling fuller longer, reducing the tendency to snack on less nutritious foods or overeat. This is especially useful if you’re managing weight while also needing more energy for breastfeeding or caring for a newborn.

4. Slow-Cooked Meals

• Nutrient Retention: Slow-cooking, especially when using methods like stewing or braising, helps retain more nutrients in foods, particularly minerals and vitamins that are sensitive to heat. The longer cooking time at low temperatures allows for better extraction of nutrients, especially from tougher cuts of meat, bones, and fibrous vegetables.
• Digestibility: Slow cooking also breaks down proteins and fibers, making them easier to digest, which is helpful for a postpartum body that might be more sensitive to foods.
• Ease of Meal Prep: Slow-cooked meals are perfect for batch cooking, which is a huge benefit when you’re short on time during the postpartum period. A large pot of stew, soup, or curry can be made in advance, stored, and reheated as needed, saving time and effort. I recommend a slow-cooker with a latch-on lid for easy transport, and programming like this Crock Pot Cook & Carry.

5. Additional Benefits for Postpartum Health

• Anti-Inflammatory: Many slow-cooked dishes, especially those featuring bone broth or grass-fed meats, contain nutrients like collagen and gelatin, which help repair tissues and reduce inflammation. After childbirth, inflammation is common, and foods that support recovery can promote healing and comfort.
• Hydration: Slow-cooked meals like soups and stews can be rich in water, which is vital for hydration—important for breastfeeding and overall recovery.
• Comfort & Healing: Comfort foods are often slow-cooked, providing not only nourishment but also emotional support during a time of physical and emotional stress. The act of eating well-cooked, hearty meals can be soothing and help mothers feel nurtured during a challenging recovery period.

Meal Prepping Recipes

Here are some of my favorite recipes, to be prepared during pregnancy and enjoyed postpartum, or any time that you’re in need of a nourishing meal. Any soups or stews can easily be prepared ahead of time and frozen in individual servings, or ingredients can be stored together in freezer bags to easily throw in a pot or crockpot at a later time.

Breakfast

• Breakfast Burritos (make with almond flour or cassava tortillas)
• Low Sugar Baked Oatmeal (consider adding 1/2 cup collagen to the recipe)
• Paleo Banana Chocolate Chip Walnut Muffins (use unbleached muffin liners and a toxin-free, stainless steel muffin pan)
• Paleo Breakfast Casserole
• Almond Flour Cheddar Biscuits (high protein, low carb)

Lunch/Dinner

• One Pan Chicken Fajitas (prepare and freeze ingredients separately. You can even freeze a pack of tortillas together with the bag of chicken and veggies. Or, serve with rice)
• Veggie-Rich Taco Casserole (make with rice or quinoa)
• Ratatouille Soup (add diced grilled chicken)
• Pasta E Fagioli (omit pasta, if you wish)
• Instant Pot Rotisserie Chicken (serve with bagged salad)
• Beef Stew (sub tapioca starch for Paleo)
• Thai Chicken Curry Soup (store rice noodles separately in pantry, or serve with fresh rice/quinoa instead)
• Indian Curry Soup
• Chicken Potato Soup
• Zucchini Lasagne
• Chicken and Broccoli Casserole (no canned soup in this recipe! can omit cheese, and use bone broth instead of milk)
• Shepherd’s Pie
• Cabbage Roll Casserole (can substitute rice with quinoa for higher protein)

Snacks

• Protein Popsicles (made with silicone popsicle molds)
• Protein/Oat Balls
• Pistachio Date Balls (can omit oats)
• Low Carb Peanut Butter Bark

To sum it up, meal prepping for pregnancy is a smart, effective way to ensure that you and your growing family are nourished with wholesome, nutrient-dense meals. By focusing on simple, healthy recipes that are rich in high-quality protein, complex fiber, and slow-cooked goodness, you’ll be setting yourself up for smoother days, both during pregnancy and postpartum. Whether you’re meal prepping for pregnancy to manage your energy levels or preparing meals that support recovery after childbirth, the right foods will help you feel your best. So, take the time to plan ahead, minimize toxins, and create meals that are easy to grab, heat, and enjoy—your body and your baby will thank you.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

Become a Patient

Don’t miss out! Join the email list.

Sign Me Up!

Love this post Share it!

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Want more Grab a copy of my new book, The Postpartum Check-In !

Reminder: The information on this post or anywhere else on this blog or other writing is purely educational, and is not intended to diagnose, treat, prevent, or cure any health condition.

The post Your Guide to Meal Prepping for Pregnancy appeared first on Dr. Alexandra MacKillop.