Should You Avoid Certain Foods When Breastfeeding?

Posted on January 26, 2026

Breastfeeding & Diet: Should You Avoid Certain Foods?

Introduction
The Myth of the Restrictive Breastfeeding Diet
Foods to Consistently Limit
The Spicy Food and Garlic Question
Herbs That May Impact Milk Supply
Identifying Food Sensitivities in Your Baby
Nourishing Yourself for Successful Lactation
Conclusion
FAQ

Introduction

For nine months, you likely followed a strict list of dietary rules to keep your growing baby safe. You may have skipped the sushi, put away the deli meats, and limited your coffee runs. Now that your little one is finally here, it is only natural to wonder if those restrictions need to continue. Many new parents feel anxious about how their diet might affect their milk or their baby’s comfort.

At Milky Mama, we believe that breastfeeding should feel empowering, not like a chore filled with complicated rules. Our mission is to provide the support and education you need to navigate this journey with confidence. If you want a deeper foundation for the early days, our Breastfeeding 101 course is a helpful place to start.

While there are many myths about what you can and cannot eat, the truth is often much simpler than you might expect. In this article, we will explore the evidence regarding dietary restrictions during lactation. We will cover which items are worth limiting, which myths you can safely ignore, and how to spot actual food sensitivities in your baby. Our goal is to help you enjoy a diverse, nourishing diet while successfully reaching your breastfeeding goals.

The Myth of the Restrictive Breastfeeding Diet

One of the most common misconceptions about breastfeeding is that you must eat a bland diet to prevent "colic" or gas. You might have heard that you should avoid broccoli, beans, or onions. However, for the vast majority of families, these restrictions are entirely unnecessary.

Your breast milk is not made directly from the contents of your stomach. Instead, it is made from your blood and lymph. When you eat gassy foods like cabbage or beans, the gas is produced in your own digestive tract. This gas does not pass into your bloodstream, which means it cannot pass into your breast milk.

Most babies are perfectly fine with whatever their parents choose to eat. In fact, eating a wide variety of flavors can be beneficial. It exposes your baby to different tastes early on. This variety may actually make them more open to different foods when they eventually start solids.

Key Takeaway: Breast milk is made from your blood, not your stomach contents. You do not need to avoid "gassy" vegetables unless you personally find them uncomfortable to digest.

Foods to Consistently Limit

While there are no foods that every single person must avoid, there are a few things that should be consumed mindfully. These substances can pass into your milk in amounts that might affect your baby's behavior or health.

Caffeine and Your Baby

You do not have to give up your morning cup of coffee. Most experts agree that a low to moderate amount of caffeine is safe. This typically means about 300 milligrams per day, or roughly two to three cups of coffee.

Some babies are more sensitive to caffeine than others. This is especially true for newborns and preterm infants, as their bodies process caffeine much more slowly. If you notice your baby is unusually jittery, fussy, or struggling to sleep after you consume caffeine, you may want to scale back.

Common sources of caffeine include:

Coffee and espresso
Black and green teas
Energy drinks
Sodas
Chocolate (though in much smaller amounts)

Alcohol and Breastfeeding

The safest choice is to avoid alcohol, but having an occasional drink is generally considered fine once breastfeeding is well-established. The "sober enough to drive" rule is a good general guideline. If you feel the effects of alcohol, it is present in your milk.

If you choose to have a drink, it is best to do so immediately after a nursing session. This gives your body about two hours to clear the alcohol before the next feed. You do not need to "pump and dump" to remove alcohol from your milk. As the alcohol levels drop in your blood, they drop in your milk as well.

High-Mercury Fish

Fish is an excellent source of protein and omega-3 fatty acids, which are vital for your baby's brain development. However, certain large, predatory fish contain high levels of mercury. This heavy metal can pass through milk and potentially affect a baby's developing nervous system.

Fish to avoid or strictly limit:

Shark
Swordfish
King Mackerel
Tilefish
Bigeye Tuna

Instead, focus on "Best Choice" seafood like salmon, shrimp, tilapia, and catfish. These are low in mercury and high in the nutrients you and your baby need. Aim for two to three servings of these low-mercury options each week.

The Spicy Food and Garlic Question

Many cultures around the world consume heavy amounts of spices and garlic as a daily staple. In these regions, breastfeeding parents continue to eat these foods without issue. There is no evidence that spicy food causes diaper rash or digestive upset in the average baby.

Garlic can change the smell and flavor of your milk. Interestingly, some studies suggest that babies may actually nurse longer and more vigorously when the milk tastes like garlic. If you enjoyed spicy foods during pregnancy, your baby has already been exposed to those flavor profiles through the amniotic fluid.

If you notice a consistent pattern where your baby seems uncomfortable after you eat a specific spicy dish, you can try eliminating it for a few days to see if their behavior improves. However, you do not need to proactively remove spice from your life.

What to do next:

Keep a simple food diary if you suspect a specific food is causing fussiness.
Monitor your baby for 24 hours after eating a "suspect" food.
Focus on how your baby reacts, rather than following a generic list of "bad" foods.

Herbs That May Impact Milk Supply

While many herbs are safe, some are known as "anti-galactagogues." A galactagogue is a substance that helps increase milk supply. Conversely, anti-galactagogues may decrease it when consumed in large therapeutic doses.

Common culinary herbs like peppermint, sage, and parsley are generally safe in small amounts. You likely won't see a drop in supply from a single peppermint candy or sage-seasoned chicken. However, drinking several cups of strong peppermint tea daily or using peppermint essential oil could potentially lead to a dip for some people.

If you are worried about your supply, we recommend focusing on hydration and proven lactation-support ingredients. Our Pumping Queen supplement is designed for pumping mamas who want targeted support, while our Milky Melon drink mix offers a refreshing way to stay hydrated.

This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice.

Identifying Food Sensitivities in Your Baby

While most babies handle their parent's diet perfectly fine, a small percentage may have an actual food allergy or sensitivity. The most common culprit is Cow’s Milk Protein Allergy (CMPA). This is not the same as lactose intolerance; it is a reaction to the proteins found in dairy products.

Signs of a Potential Sensitivity

If your baby is reacting to something in your diet, the symptoms are usually more significant than just a little gas. Look for these signs:

Extreme fussiness or inconsolable crying (colic-like symptoms)
Frequent, forceful spitting up or vomiting
Diarrhea or very green, mucoid stools
Specks of blood in the stool (a classic sign of CMPA)
Skin rashes, hives, or eczema
Congestion or wheezing

The Elimination Process

If you and your pediatrician or a certified lactation consultant suspect a food sensitivity, they may suggest an elimination diet. This involves removing the suspected food (usually dairy or soy) from your diet entirely for two to four weeks.

It can take a few weeks for the proteins to completely leave your system and your baby's system. If the baby’s symptoms improve significantly during this time, you have likely found the cause. For more one-on-one help with breastfeeding concerns, our Certified Lactation Consultant Breastfeeding Help page is a good next step.

Key Takeaway: True food sensitivities involve more than just gas. Look for skin issues, respiratory symptoms, or changes in stool before assuming your diet is the problem.

Nourishing Yourself for Successful Lactation

Instead of focusing on what to avoid, it is often more helpful to focus on what to add. Breastfeeding requires a significant amount of energy. Most nursing parents need an extra 330 to 400 calories per day to maintain their energy and milk production.

Essential Nutrients to Include

Choline: Found in eggs and meat, this is vital for brain development.
Iodine: Essential for thyroid health and baby’s growth.
Omega-3s: Great for heart and brain health.
Iron: Many parents are depleted after birth; leafy greens and beans can help.

If you follow a vegan or vegetarian diet, you must be particularly mindful of Vitamin B12. This vitamin is primarily found in animal products. A deficiency can lead to serious neurological issues for a breastfed infant. Working with your doctor to find a high-quality B12 supplement is often necessary.

Hydration and Support

Staying hydrated is one of the simplest ways to support your body during lactation. Water is always the best choice, but sometimes you want something with more flavor and added benefits. Our Pumpin Punch drink mix and Milky Melon drink mix are designed to make hydration feel a little easier.

If you find it difficult to sit down for a full meal while caring for a newborn, nutrient-dense snacks are your best friend. Our Emergency Lactation Brownies are a fan favorite for a reason. They are packed with oats, brewer's yeast, and flaxseed, making them a tasty and convenient way to support your supply while satisfying your sweet tooth.

If you want a broader look at how Milky Mama builds feeding support into everyday routines, our guide to what to use to increase milk supply is a helpful companion read.

Next steps for a healthy diet:

Drink to thirst; you don't need to force gallons of water.
Eat small, frequent meals to keep your energy stable.
Keep healthy, lactation-friendly snacks nearby during nursing sessions.
Don't be afraid of flavor—garlic and spices are your friends!

Conclusion

Deciding what to eat while breastfeeding doesn't have to be a source of stress. In most cases, the answer to "should you avoid certain foods when breastfeeding" is a resounding no. Aside from limiting high-mercury fish and being mindful of caffeine and alcohol, you are free to enjoy the foods you love.

Your body is incredible. It works hard to create the perfect nutrition for your baby, regardless of whether you had a salad or a slice of pizza for lunch. If you are combining pumping and breastfeeding, our Breastfeeding & Pumping guide can help you build a routine that feels more manageable.

Eat a diverse, colorful diet to expose your baby to many flavors.
Limit high-mercury fish and keep caffeine to a moderate level.
Trust your instincts and seek professional help if you suspect an allergy.
Focus on nourishing yourself so you have the energy to care for your little one.

You are doing an amazing job, and your well-being matters just as much as your baby's. If you ever feel overwhelmed or need a boost, we are here to support you. Whether you need a virtual consultation or a delicious box of treats, the Milky Mama community has your back. If you want a practical starting point, the Quick Start Guide to Breastfeeding Success offers simple, early-stage support.

This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice.

FAQ

Does eating spicy food cause diaper rash in babies?

For most babies, spicy food in the parent's diet does not cause diaper rash or digestive upset. If your baby has a very sensitive system, you might notice a reaction, but this is the exception rather than the rule. Cultural cuisines across the globe prove that spicy food and breastfeeding can safely go hand-in-hand.

How much caffeine can I safely have while breastfeeding?

Most healthcare professionals recommend limiting caffeine to about 300 milligrams per day, which is roughly two to three cups of coffee. It is best to monitor your baby for signs of jitteriness or trouble sleeping, especially in the newborn stage. If your baby seems unaffected, your moderate caffeine intake is generally considered safe.

Do I need to stop eating dairy if my baby is gassy?

No, you do not need to stop eating dairy just because your baby has gas. Gas is a normal part of infant development as their digestive systems mature. You should only consider removing dairy if your baby shows signs of a true Cow's Milk Protein Allergy, such as hives, eczema, or blood in their stool.

Will eating peppermint really dry up my milk supply?

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Should You Avoid Certain Foods When Breastfeeding?

Table of Contents

Introduction

The Myth of the Restrictive Breastfeeding Diet