What Foods to Not Eat When Breastfeeding: A Helpful Guide
Posted on January 26, 2026
Table of Contents
- Introduction
- The Myth of the Restrictive Breastfeeding Diet
- High-Mercury Fish to Avoid
- Managing Caffeine Intake
- Alcohol and the "Pump and Dump" Myth
- Herbs That May Impact Milk Supply
- Identifying Real Baby Sensitivities
- The Truth About "Gassy" Foods
- Artificial Sweeteners and Processed Foods
- Spicy Foods and Strong Flavors
- Navigating Cravings and Nutritional Needs
- Hydration: What to Drink Instead
- When to Seek Professional Help
- A Balanced Approach to Nursing Nutrition
- Conclusion
- FAQ
Introduction
Choosing what to eat while nursing can feel like navigating a maze of conflicting advice. You might hear from one person that spicy foods are off-limits, while another tells you to avoid broccoli at all costs. It is completely normal to feel a little overwhelmed by these "rules." At Milky Mama, we believe that breastfeeding support should feel empowering rather than restrictive. We want to help you understand the science behind maternal nutrition so you can nourish yourself with confidence.
This post covers the specific foods you may want to limit or avoid and explains how your diet actually impacts your milk. We will look at caffeine, alcohol, specific fish, and herbs that might affect your supply. Our goal is to provide you with clear, evidence-based information to help you and your baby thrive. Remember, your body is doing something incredible, and you deserve a diet that feels sustainable and joyful.
The most important thing to remember is that there is no "perfect" breastfeeding diet. Most parents can continue to eat their favorite foods while successfully nursing their little ones. Your well-being matters just as much as your milk supply, and we are here to help you find that balance.
The Myth of the Restrictive Breastfeeding Diet
Many new parents believe they must stick to a bland, boring diet to keep their babies happy. This is one of the most common misconceptions we encounter. In reality, breast milk is made from your blood, not directly from the contents of your stomach. While some flavors and molecules do pass through, the majority of what you eat does not cause immediate issues for your baby.
In many cultures around the world, nursing parents eat vibrant, spicy, and heavily seasoned foods daily. Their babies do not just tolerate these flavors; they often become more open to different tastes later in life. Exposing your baby to a variety of flavors through your milk can actually make the transition to solid foods easier. It acts as a tiny preview of the family meals they will eventually enjoy.
Instead of focusing on a long list of "no" foods, we encourage you to focus on variety. A diet rich in whole grains, proteins, and healthy fats supports your energy levels. If you are worried about your supply, we often suggest incorporating gentle galactagogues. A galactagogue is a substance, usually a food or herb, that may help increase milk production. Our Emergency Lactation Brownies are a favorite for many because they include ingredients like oats and brewer's yeast in a delicious treat.
High-Mercury Fish to Avoid
When discussing what foods to not eat when breastfeeding, high-mercury fish is at the top of the list. Mercury is a heavy metal that can be toxic, particularly to the developing nervous system of an infant. While fish is an excellent source of protein and omega-3 fatty acids, some varieties carry more risk than others.
The fish to avoid are typically large, older predatory fish that sit at the top of the food chain. Because they live longer and eat smaller fish, mercury builds up in their systems over time. You should try to avoid or strictly limit:
- Shark
- Swordfish
- King Mackerel
- Tilefish
- Bigeye Tuna
While these should be avoided, you do not need to cut out fish entirely. In fact, the DHA and EPA found in fish are wonderful for your baby’s brain development. You can safely enjoy 8 to 12 ounces per week of low-mercury options. Salmon, pollock, catfish, and shrimp are generally considered safe and nutritious choices. If you enjoy canned tuna, opt for "light" tuna rather than albacore, as it tends to be lower in mercury.
Key Takeaway: Avoid large predatory fish like swordfish and shark to minimize mercury exposure. Stick to 2–3 servings of low-mercury fish per week for healthy brain-building fats.
Managing Caffeine Intake
Many of us rely on a morning cup of coffee to get through the day, especially when dealing with newborn sleep schedules. The good news is that you do not have to give up your caffeine completely. However, moderation is important because caffeine does pass into breast milk in small amounts.
Most infants can handle a moderate amount of caffeine without any issues. However, newborns and premature babies have a much harder time breaking down caffeine than older babies or adults. If you consume large amounts, the caffeine can build up in your baby’s system. This may lead to irritability, fussiness, or difficulty sleeping.
The general recommendation is to stay under 300 milligrams of caffeine per day. This is roughly the amount found in two to three small cups of brewed coffee. Keep in mind that caffeine is also found in:
- Black and green teas
- Many sodas and energy drinks
- Dark chocolate
- Certain over-the-counter headache medications
If you notice your baby seems particularly "wired" or has trouble settling down after you have coffee, try observing the timing. Some parents find it helpful to have their caffeine right after a nursing session. This gives your body more time to process the caffeine before the next feeding.
Alcohol and the "Pump and Dump" Myth
One of the most frequent questions we receive is whether it is safe to have an occasional alcoholic drink. For a long time, the advice was to "pump and dump" (expressing milk and throwing it away) after drinking. We now know that this is usually unnecessary. Alcohol leaves your breast milk at the same rate it leaves your bloodstream.
Pumping and discarding milk does not speed up the removal of alcohol from your system. Once you are sober and the alcohol has left your blood, it is also gone from your milk. If you choose to have a drink, the safest approach is to wait about two hours per standard drink before nursing again. A standard drink is roughly 5 ounces of wine, 12 ounces of beer, or 1.5 ounces of spirits.
It is important to know that high levels of alcohol can interfere with your let-down reflex. The let-down reflex is the process where your body releases milk from the ducts so the baby can drink. Alcohol can also temporarily decrease your milk production if consumed in large quantities. If you are feeling "tipsy" or impaired, it is best to wait or use previously expressed milk to feed your baby.
What to do if you plan to have a drink:
- Feed your baby or pump right before having a drink.
- Drink plenty of water alongside your alcoholic beverage.
- Wait at least two hours before the next feeding to allow alcohol levels to drop.
- Keep a stash of frozen milk for times when you are unsure or want to rest.
Herbs That May Impact Milk Supply
While many herbs are used to boost supply, some can actually have the opposite effect. These are known as anti-galactagogues. In culinary amounts—like the pinch of dried herbs in a pasta sauce—they are usually fine. However, consuming them in high concentrations or medicinal amounts might cause a dip in production for some parents.
The three main herbs to watch out for are peppermint, sage, and parsley. Sage, in particular, is often used by parents who are looking to wean or reduce an oversupply because it can be quite effective at drying up milk. If you are struggling with low supply, you may want to avoid peppermint tea or large amounts of fresh parsley in salads like tabbouleh.
Every body reacts differently to these herbs. Some people can drink peppermint tea every day without a single issue. Others might notice a change after just one cup. If you enjoy the flavor of mint, consider switching to ginger or chamomile tea, which are generally considered safe and do not impact supply.
If you want a simple way to support hydration while keeping your routine enjoyable, our Pumpin Punch™ drink mix is one option from our Lactation Drink Mixes.
Consult with your healthcare provider or a certified lactation consultant before starting any new herbal supplements. This product is not intended to diagnose, treat, cure, or prevent any disease.
Identifying Real Baby Sensitivities
Sometimes, babies do react to something in their parent’s diet. However, it is important to distinguish between a true sensitivity and normal newborn behavior. All babies have gas, and most babies have periods of fussiness in the evening. This is often just a part of their digestive systems maturing.
If your baby has a genuine sensitivity, you will likely see more than just a little gas. Look for signs like:
- Extreme inconsolable crying after feedings
- Excessive spitting up or vomiting
- Green, mucousy, or bloody stools
- Rashes or eczema that do not clear up
- Congestion or wheezing
The most common culprit for true sensitivities is cow’s milk protein. This is different from lactose intolerance. If your baby is sensitive to the proteins in dairy, you might need to eliminate milk, cheese, and yogurt for a few weeks to see if symptoms improve. Other common sensitivities include soy, eggs, or nuts, though these are less frequent than dairy.
Before you start cutting multiple food groups out of your diet, we recommend keeping a food diary. Note what you eat and how your baby behaves. This can help you identify actual patterns rather than guessing. Working with a lactation consultant can also help you determine if the issue is dietary or perhaps related to your baby's latch or a fast let-down.
If you need one-on-one guidance, our Certified Lactation Consultant Breastfeeding Help page is a helpful next step, and our Breastfeeding & Pumping: Your Essential Guide can give you more context.
The Truth About "Gassy" Foods
We have all heard that we should avoid beans, broccoli, cabbage, and cauliflower because they cause gas in the baby. This is largely a myth. While these foods might cause gas in your digestive tract, the gas itself cannot pass into your bloodstream. Since your milk is made from your blood, the gas stays with you.
The only way these foods could impact your baby is if the proteins from the food cause a sensitivity. This is rare for vegetables. Most of the time, if you enjoy these nutritious foods, you should keep eating them. They are packed with fiber and vitamins that help your body recover postpartum.
If you notice that your baby is consistently uncomfortable after you eat a specific "gassy" vegetable, it is okay to take a break from it. However, do not feel like you have to pre-emptively avoid these healthy options. Most babies do perfectly well with a parent who eats a high-fiber, veggie-rich diet.
For a deeper dive into this topic, you can also read What Foods Help Milk Supply While Breastfeeding?.
Artificial Sweeteners and Processed Foods
While not strictly "forbidden," artificial sweeteners and highly processed foods are worth keeping an eye on. Some studies suggest that the taste for sweets can be influenced by what the baby experiences in the womb and through breast milk. If you consume a high amount of artificial sweeteners, your baby is exposed to those flavors as well.
Some artificial sweeteners, like saccharin, can stay in breast milk for a significant amount of time. While others, like aspartame, are generally considered safe in moderate amounts, many parents prefer to stick to natural sweeteners when possible. Staying hydrated with water is always the best choice.
If you find plain water boring, our Lactation LeMOOnade™ is a great alternative. It provides the hydration you need while using ingredients that support lactation, without relying on high-intensity artificial sweeteners. Keeping your fluids up is essential for maintaining your energy and supporting your body’s natural milk production processes.
Spicy Foods and Strong Flavors
One of the biggest fears new moms have is that spicy food will "burn" the baby or cause a diaper rash. There is no evidence to suggest that spicy compounds like capsaicin cause physical harm to a nursing infant. In fact, many babies seem to enjoy the subtle change in the flavor of the milk.
If you ate spicy food during your pregnancy, your baby has already been exposed to those flavors through the amniotic fluid. Continuing to eat them while breastfeeding is a natural progression. If you notice your baby pulling off the breast or acting fussy after a particularly spicy meal, you can simply tone it down next time.
Garlic is another flavor that strongly permeates breast milk. Interestingly, some research shows that babies may actually nurse longer and more vigorously when the milk tastes like garlic. Unless your baby clearly dislikes the taste, there is no reason to skip the garlic bread.
Key Takeaway: Spicy and flavored foods are generally safe and may even help your baby accept a wider variety of foods later in life.
Navigating Cravings and Nutritional Needs
Breastfeeding requires a lot of energy. Your body actually needs an extra 450 to 500 calories per day to produce milk. This is not the time for restrictive dieting or extreme calorie counting. When you are hungry, your body is telling you it needs fuel to keep up with the demands of lactation.
If you find yourself reaching for "unhealthy" snacks, try to pair them with something nutritious. If you want a cookie, have it with a piece of fruit or a handful of nuts. This helps keep your blood sugar stable and prevents the "hangry" feelings that often come with the exhaustion of new parenthood.
We know that finding time to cook healthy meals is difficult with a newborn. Simple, one-handed snacks are your best friend. Hard-boiled eggs, yogurt cups, apple slices with peanut butter, and pre-cut veggies are all great options. Our lactation treats are also designed to be a convenient way to get supply-supporting nutrients while satisfying your sweet tooth.
Hydration: What to Drink Instead
Since we are talking about what to avoid, it is helpful to look at what you should be drinking. Hydration is the foundation of a good milk supply. If you are dehydrated, you will feel sluggish and tired, which can make the challenges of breastfeeding feel even heavier.
Water should be your primary drink, but you don’t have to drink gallons of it. The old advice to "force fluids" is no longer recommended. Instead, drink to thirst. A good rule of thumb is to have a glass of water every time you sit down to nurse or pump.
If you are tired of plain water, try:
- Infusing water with cucumber, lemon, or berries.
- Drinking coconut water for natural electrolytes.
- Sipping on herbal teas like raspberry leaf or ginger.
- Enjoying a glass of Milky Mama Lactation LeMOOnade™ for a refreshing, supply-friendly treat.
Staying hydrated helps your body function at its best. While drinking extra water won't necessarily "create" more milk if your supply is already meeting your baby's needs, being dehydrated can certainly cause your energy levels to dip.
If you are looking for more day-to-day support, our The Official Milky Mama Lactation Support Group on Facebook is a great place to connect with other parents, and our Breastfeeding 101 course can help you build a stronger foundation.
When to Seek Professional Help
If you are cutting out foods and still seeing your baby in distress, it is time to talk to a professional. A Pediatrician can rule out medical issues like reflux or pyloric stenosis. A Certified Lactation Consultant (IBCLC) can check your baby's latch and your milk transfer to ensure that the fussiness isn't related to how the baby is eating.
Sometimes, what looks like a food sensitivity is actually a "fast let-down." If your milk comes out very quickly, the baby might swallow a lot of air, leading to gas and discomfort. A lactation consultant can show you different nursing positions, like the laid-back position, to help manage a fast flow.
Never feel like you have to figure this out alone. Breastfeeding is a learned skill for both you and your baby. At Milky Mama, we offer virtual consultations to provide you with the professional support you need from the comfort of your home. We are here to help you troubleshoot supply issues, latching difficulties, and nutritional concerns.
A Balanced Approach to Nursing Nutrition
In summary, the list of foods you truly need to avoid is quite short. By focusing on what you can eat rather than what you can't, you make the breastfeeding journey much more enjoyable. Your body is incredibly resilient and capable of making high-quality milk even if your diet isn't perfect every single day.
Be kind to yourself as you navigate this season. If you have a day where you eat nothing but toast and coffee, it’s okay. If you accidentally eat a giant bowl of peppermint ice cream and notice a temporary dip in supply, don’t panic. Just hydrate, nurse frequently, and your body will likely bounce back.
Breastfeeding is a beautiful way to bond with your baby, and the food you eat should support that bond, not create stress. Focus on the big picture: stay hydrated, eat a variety of whole foods when you can, and listen to your baby’s cues. You are doing an amazing job, and every drop of milk you provide is a gift to your little one.
Conclusion
Navigating your diet while breastfeeding doesn't have to be a source of stress. While it is important to avoid high-mercury fish and keep an eye on your caffeine and alcohol intake, the vast majority of foods are perfectly safe. Most "rules" about avoiding spicy or gassy foods are based on myth rather than science. By staying observant and focusing on a balanced, varied diet, you can support your health and your baby's development simultaneously.
Key Takeaways for Your Breastfeeding Diet:
- Avoid high-mercury fish like shark and swordfish; choose salmon or shrimp instead.
- Keep caffeine under 300mg per day to avoid baby jitters.
- Wait two hours per alcoholic drink before nursing, rather than "pumping and dumping."
- Watch out for large amounts of peppermint, sage, and parsley if you have supply concerns.
- Focus on hydration and listen to your body’s hunger cues.
"Your breastfeeding journey is unique to you. Focus on nourishing your body with love and patience, and don't be afraid to enjoy the flavors you love."
If you are looking for more ways to support your lactation journey, we invite you to explore our herbal supplements and delicious lactation drinks. From our Lady Leche capsules to our classic brownies, we have spent years perfecting products that help breastfeeding families feel supported. You don't have to do this alone—we are with you every step of the way.
FAQ
Can I eat spicy food while breastfeeding?
Yes, most babies tolerate spicy foods just fine, especially if you ate them during pregnancy. If you notice your baby is unusually fussy or has a diaper rash after a very spicy meal, you may want to reduce the heat, but there is no need to avoid spice entirely unless it bothers your baby.
Do I really need to "pump and dump" after having a glass of wine?
No, pumping and discarding milk does not remove alcohol from your system any faster. Alcohol leaves your breast milk at the same rate it leaves your blood, so once you are sober, your milk is also safe for your baby.
Will eating broccoli make my baby gassy?
It is very unlikely that eating broccoli or other cruciferous vegetables will cause gas in your baby. While these foods may cause gas in your own gut, the gas molecules themselves do not pass into your breast milk.
Which fish are the safest to eat while nursing?
The safest fish are those low in mercury but high in healthy fats, such as salmon, trout, sardines, and pollock. You should avoid high-mercury options like shark, swordfish, and king mackerel to protect your baby's developing nervous system.
This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice.
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