What Foods Should I Not Eat When Breastfeeding?
Posted on January 26, 2026
Table of Contents
- Introduction
- Understanding Your Nutritional Needs While Breastfeeding
- Foods to Approach with Caution (Not Always Avoid Entirely)
- Foods That Might Cause Issues (Listen to Your Baby)
- Cultural Food Practices and Breastfeeding
- The Importance of Hydration
- Foods for a Healthy, Diverse Breastfeeding Diet
- When to Seek Professional Guidance
- Medical & FTC Disclaimer
- FAQ: Your Common Questions Answered
- Embrace Your Breastfeeding Journey
Introduction
As new parents, we're often bombarded with information, and navigating what's "best" for our babies can feel overwhelming. Once your little one arrives, the focus often shifts to breastfeeding – a beautiful, natural process, but one that doesn't always come naturally. You might find yourself wondering, "What foods should I not eat when breastfeeding?" or even, "Does what I eat really affect my baby?" These are incredibly common questions, and if you're asking them, you're already doing an amazing job thinking about your baby's well-being and your own.
At Milky Mama, we understand that this journey is filled with joy, challenges, and countless decisions. We believe that breastfeeding support should feel compassionate and empowering, not prescriptive or judgmental. The good news is that for most breastfeeding moms, extreme dietary restrictions aren't necessary. Your body is incredibly resilient, and breasts were literally created to feed human babies! However, there are certain foods and substances that can impact your baby or your milk supply, and being informed allows you to make choices that feel right for your family.
This comprehensive guide is designed to empower you with evidence-based information, helping you understand the nuances of your diet while breastfeeding. We'll explore which foods to approach with caution, debunk common myths, and provide practical advice to help you maintain a healthy, varied diet that supports both you and your little one. Our main message is clear: most moms can enjoy a diverse diet, but knowing what to look out for can make all the difference in a comfortable and successful breastfeeding experience.
Understanding Your Nutritional Needs While Breastfeeding
Before we dive into what to limit, let's briefly touch on what your body needs during lactation. Breastfeeding is a significant physiological process, and your body is working hard to produce nourishing milk for your baby. This means your nutritional requirements are elevated.
Caloric Intake: Fueling Your Milk Production
You might have heard that breastfeeding burns a lot of calories, and it's true! Most breastfeeding mothers need an additional 330 to 400 kilocalories (kcal) per day compared to their pre-pregnancy intake. This isn't a strict number for everyone, though. Factors like your age, body mass index, activity level, and whether you're exclusively breastfeeding or combo-feeding all play a role. The key is to listen to your body and ensure you're consuming enough to feel energized and support your milk supply. Trying to lose weight too rapidly while breastfeeding can sometimes impact your energy levels and supply, so it’s often best to aim for a gradual, sustainable approach, focusing on nutrient-dense foods.
Essential Nutrients: More Than Just Calories
Beyond calories, certain vitamins and minerals become even more crucial during lactation. Your body prioritizes providing these nutrients to your baby through breast milk, sometimes drawing from your own reserves if your dietary intake is insufficient.
Key Nutrients to Focus On:
- Iodine: Essential for your baby's brain development and thyroid function. Breastfeeding women are recommended to consume 290 micrograms (mcg) of iodine daily. Good sources include dairy products, eggs, seafood, and iodized table salt.
- Choline: Another vital nutrient for infant brain development. The recommendation for breastfeeding women is 550 milligrams (mg) daily. You can find choline in dairy products, eggs, meats, some seafood, beans, peas, and lentils.
- Vitamin B12: Especially important for those following vegetarian or vegan diets. Low levels in breast milk can put infants at risk of neurological damage. Rich sources include meat, fish, poultry, eggs, and dairy. If you follow a plant-based diet, discussing supplementation with your healthcare provider is highly recommended.
- Vitamin D: Crucial for bone health for both you and your baby. While some foods contain vitamin D (like fatty fish and fortified dairy), many people benefit from supplementation, especially if sun exposure is limited.
- Omega-3 Fatty Acids (EPA/DHA): Important for your baby's brain and eye development. Fatty fish like salmon are excellent sources. If you don't eat fish, discuss algal-oil based supplements with your healthcare provider.
- Protein: An essential building block for both you and your baby. Aim for lean meats, poultry, fish, eggs, dairy, beans, lentils, nuts, and seeds.
- Calcium: Supports your bone health, as pregnancy and breastfeeding can sometimes deplete calcium stores. Dairy products, fortified plant-based milks, and leafy greens are good sources.
- Iron: Necessary for energy and preventing anemia. Red meat, poultry, fish, beans, lentils, and fortified cereals are good options. Plant-based iron (non-heme iron) is less readily absorbed than animal-based iron (heme iron), so those on vegetarian or vegan diets should be particularly mindful.
Multivitamins and Supplements: Filling the Gaps
While a healthy, varied diet is the cornerstone of good nutrition, sometimes it's hard to get everything you need, especially with the demands of new motherhood. Continuing a prenatal vitamin after birth can be beneficial, but it's worth noting that some may exceed the iron and folic acid needs of breastfeeding mothers. However, for many, particularly those with dietary restrictions (like vegan or vegetarian diets), a multivitamin supplement can help ensure adequate intake of nutrients like B12, iodine, and choline. We always encourage you to discuss your specific needs with your healthcare provider or a registered dietitian to determine the most appropriate supplementation for your unique journey.
Foods to Approach with Caution (Not Always Avoid Entirely)
Most mothers can eat a wide variety of foods without issues. Your breast milk flavors will even change with your diet, which can be an advantage, exposing your baby to different tastes that might help them accept solid foods later on! However, there are a few categories where mindful consumption or even temporary avoidance may be beneficial.
Caffeine: Jitters and Sleep Interruptions
Many of us rely on that morning (or afternoon!) cup of coffee to kickstart our day, especially with a newborn. Caffeine does pass into breast milk in small amounts. For most infants, low to moderate maternal caffeine intake (around 300 milligrams or less per day, which is about 2-3 cups of coffee) typically doesn't cause problems.
However, some babies can be more sensitive. If your baby seems unusually fussy, irritable, or has trouble sleeping after you've had a significant amount of caffeine, you might consider reducing your intake. Preterm and younger newborn infants process caffeine more slowly, so their mothers might benefit from consuming even less.
Common sources of caffeine include:
- Coffee
- Black and green teas
- Sodas
- Energy drinks
- Chocolate
If you notice sensitivity, try gradually cutting back or opting for decaffeinated alternatives. We know that sometimes, a little pick-me-up is exactly what you need. Our Lactation Drinks like Pumpin Punch™, Milky Melon™, and Lactation LeMOOnade™ can offer a refreshing, hydrating boost without the caffeine jitters. They're designed to support your hydration and lactation journey, which is a win-win!
Alcohol: Timing is Everything
The safest approach is to avoid alcohol altogether while breastfeeding. However, an occasional, moderate drink is generally considered unlikely to harm your baby, especially if you plan it carefully. The key is to allow enough time for the alcohol to leave your system before your next feeding.
General guidelines for alcohol consumption:
- Limit intake: If you choose to drink, keep it to one or two units, once or twice a week.
- Time it right: Allow 2 to 3 hours per unit of alcohol for it to clear from your breast milk. For example, after one small glass of wine, wait at least 2-3 hours before breastfeeding. This allows alcohol to metabolize out of your breast milk.
- Pump and dump (optional): If you plan to have more than a moderate drink, you can express milk beforehand to feed your baby, and then pump and discard milk during the period you would normally feed, to maintain your supply and prevent engorgement. This does not remove alcohol from your milk faster, but it prevents your baby from consuming it.
- Safety first: Never co-sleep with your baby or sleep on a sofa with them if you've consumed alcohol, due to the increased risk of sudden infant death syndrome (SIDS).
Remember, your well-being matters too. If you're struggling with alcohol use, please reach out to your healthcare provider for support.
High-Mercury Fish: Protecting Developing Brains
Fish is a fantastic source of protein, vitamins, minerals, and those beneficial omega-3s. However, some types of fish contain higher levels of mercury, which can pass into breast milk and potentially affect your baby's developing brain and nervous system.
Recommendations for fish consumption:
- "Best Choices": Enjoy 2-3 servings (8-12 ounces total) per week of fish from the "Best Choices" category. This often includes salmon, tilapia, trout, cod, light canned tuna (skipjack), and shrimp.
- "Good Choices": Limit to one serving (4 ounces) per week of fish from the "Good Choices" category, such as albacore tuna (canned white) or sea bass.
- "Choices to Avoid": Completely avoid fish high in mercury like shark, swordfish, king mackerel, marlin, and tilefish.
Always check for local fish advisories if you're eating fish caught by family or friends. A varied diet of low-mercury fish is a great way to get the benefits without the risks.
Foods That Might Cause Issues (Listen to Your Baby)
This category is highly individualized. What might cause a reaction in one baby may be perfectly fine for another. The best approach here is observation and communication with your healthcare provider or a lactation consultant if you suspect an issue.
Potentially Gassy Foods: The Colic Connection
You might have heard that certain "gassy" foods, like cabbage, broccoli, cauliflower, beans, or onions, can cause gas or discomfort in your baby. The truth is, while these foods can certainly make you gassy, the compounds that cause gas in your digestive system typically don't pass into your breast milk. However, some babies can be more sensitive, and for a small percentage, certain foods may trigger fussiness or gassiness.
If you suspect a food is causing issues:
- Keep a food diary: Note what you eat and any subsequent reactions from your baby.
- Eliminate and reintroduce: If you identify a potential culprit, try eliminating it from your diet for a week or two, then reintroducing it to see if symptoms return. This systematic approach can help confirm a connection.
- Don't restrict unnecessarily: If your baby isn't bothered, there's no need to cut out healthy, nutritious foods from your diet. A varied diet is generally beneficial.
Spicy Foods: A Flavorful Journey (Usually)
Many cultures enjoy spicy foods, and babies are exposed to these flavors through breast milk! Studies suggest that this early exposure to different flavors may actually make babies more accepting of various foods later on. Unless your baby consistently reacts negatively (e.g., severe fussiness, rash, significant digestive upset) after you eat spicy food, there's generally no need to avoid it. Most babies tolerate a bit of spice just fine.
Peppermint, Sage, and Parsley: Potential Impact on Supply
While culinary amounts of these herbs are generally fine, large or concentrated amounts (like in herbal teas, essential oils, or supplements) have been anecdotally associated with a decrease in milk supply for some individuals. If you're concerned about your milk supply, or if you notice a dip after consuming a significant amount of these herbs, it might be worth discussing with a lactation consultant.
For moms looking to boost their supply, we offer a range of Herbal Lactation Supplements like Lady Leche™, Dairy Duchess™, Pumping Queen™, Milk Goddess™, Milky Maiden™, and Pump Hero™, crafted to support your lactation journey with beneficial botanicals.
Foods That Cause Allergic Reactions in Your Baby
This is perhaps the most significant reason to consider dietary restrictions. While rare, some babies can have an allergic reaction or intolerance to something in their mother's diet that passes through breast milk. The most common culprits are cow's milk protein, soy, eggs, peanuts, and tree nuts.
Signs of a potential allergy or intolerance in your baby:
- Skin reactions: Hives, eczema, a red itchy rash, swelling of the lips and face.
- Digestive issues: Vomiting, diarrhea (especially with blood or mucus), constipation, excessive gas, severe reflux, colic-like symptoms (inconsolable crying).
- Respiratory symptoms: Runny or blocked nose, wheezing, breathing difficulties (less common with breast milk reactions).
If you suspect your baby is reacting to a food in your diet, it's crucial to consult your pediatrician or a lactation consultant. They can help you determine if an elimination diet is appropriate and guide you through the process safely. Self-diagnosing and eliminating multiple food groups unnecessarily can lead to nutritional deficiencies for you.
Commonly suspected allergens:
- Cow's Milk Protein: This is one of the most common allergens. If suspected, you might need to eliminate all dairy products from your diet (check labels for hidden dairy).
- Soy: Often goes hand-in-hand with cow's milk protein allergy.
- Peanuts and Tree Nuts: Unless you or your baby has a diagnosed allergy, there's generally no evidence to suggest avoiding peanuts or tree nuts while breastfeeding. In fact, early exposure through breast milk might even help reduce the risk of developing these allergies in some babies. However, if there's a strong family history of severe allergies, always consult your doctor.
Cultural Food Practices and Breastfeeding
It's important to acknowledge that dietary practices during breastfeeding are influenced by culture and tradition around the world. In some cultures, mothers are advised to avoid "cold" foods, "spicy" foods, or specific ingredients like pumpkin or sikhye (a traditional Korean rice beverage), often for vague reasons or based on anecdotal evidence. While these traditions are deeply meaningful, it's worth noting that from an evidence-based perspective, there's often no scientific reason to avoid these foods unless a specific adverse reaction is observed in the baby.
A varied diet, rich in nutrient-dense foods, supports both maternal health and breast milk production. Unnecessary dietary restrictions, especially those that conflict with cultural preferences, can reduce a mother's quality of life and even discourage continued breastfeeding. We believe in empowering you with knowledge so you can navigate cultural recommendations alongside current evidence, making choices that honor your heritage while prioritizing your health and your baby's.
The Importance of Hydration
While not a "food," proper hydration is absolutely vital for breastfeeding moms. Your body uses water to produce milk, so you'll likely feel thirstier than usual.
Hydration tips:
- Drink to thirst: Listen to your body and drink whenever you feel thirsty.
- Keep a water bottle handy: Place water strategically where you nurse or pump.
- Aim for at least 8 cups (64 ounces) daily: Some moms may need more, especially in hot climates or with high activity levels.
- Don't overdo it: Drinking excessive fluids beyond what your body needs won't necessarily increase your milk supply.
Our Lactation Drinks are a delicious way to stay hydrated while also providing lactation support. Consider grabbing a Drink Sampler Pack to find your favorite!
Foods for a Healthy, Diverse Breastfeeding Diet
Instead of focusing solely on restrictions, let's highlight the abundance of wonderful, nourishing foods you can enjoy! A diverse diet not only provides essential nutrients but also exposes your baby to a wide range of flavors, which can aid in their acceptance of solids later on.
Include a variety of these nutrient-rich foods:
- Whole Grains: Oatmeal, brown rice, whole-grain bread, and pasta provide complex carbohydrates for sustained energy, fiber for digestive health, and important B vitamins. Oatmeal, in particular, is often lauded for its potential to support milk supply. We've harnessed the power of oats in our delicious lactation cookies and brownies!
- Lean Proteins: Chicken, turkey, beef, eggs, beans, lentils, and tofu are crucial for tissue repair, energy, and muscle maintenance.
- Healthy Fats: Avocados, nuts, seeds (like chia, hemp, and flax), and olive oil provide essential fatty acids for your baby's brain development and your overall health.
- Fruits and Vegetables: "Eat the rainbow!" These are packed with vitamins, minerals, antioxidants, and fiber. Leafy greens like spinach and kale are rich in vitamins A, C, E, K, and calcium. Sweet potatoes are a fantastic source of Vitamin A.
- Dairy and Calcium-Rich Alternatives: Milk, yogurt (especially Greek yogurt for extra protein), and cheese provide calcium, vital for your bones and your baby's development. If you avoid dairy, fortified plant-based milks and yogurts, along with leafy greens and fortified cereals, can be good alternatives.
- Water: As mentioned, staying well-hydrated is paramount.
Remember, your diet doesn't have to be "perfect" to breastfeed successfully. Focus on balanced meals, healthy snacks, and listening to your body's hunger and thirst cues. And if you're looking for convenient, delicious ways to support your nutrition and milk supply, explore our lactation treats collection – from our bestselling Emergency Brownies to a variety of lactation cookies like Oatmeal Chocolate Chip or Peanut Butter Chocolate Chip!
When to Seek Professional Guidance
Navigating dietary questions while breastfeeding can feel like a lot, and you don't have to do it alone. We encourage you to seek help early if you have concerns.
Consider reaching out to a professional if:
- You suspect your baby is having an allergic reaction or intolerance to something in your diet.
- You are considering eliminating a major food group from your diet.
- You are struggling with your milk supply and want personalized advice.
- You have ongoing questions about nutrition, supplements, or specific foods.
- You have a chronic health condition that impacts your dietary needs.
A certified lactation consultant (IBCLC) or your healthcare provider can offer personalized, evidence-based advice tailored to your specific situation. At Milky Mama, we're proud to offer virtual lactation consultations and online breastfeeding classes to provide the comprehensive support you deserve.
Medical & FTC Disclaimer
This information is for educational purposes only and is not intended to be medical advice. Please consult with your healthcare provider for medical advice regarding your diet, supplements, or any health concerns while breastfeeding. These products are not intended to diagnose, treat, cure, or prevent any disease.
FAQ: Your Common Questions Answered
Q1: Do I need to avoid artificial sweeteners while breastfeeding?
A1: While research on the long-term effects of artificial sweeteners on breastfed babies is ongoing, there's no strong evidence currently showing harm from moderate consumption. Some concerns exist about a potential link to increased childhood obesity, but more research is needed. Many healthcare providers suggest limiting intake as a precautionary measure, or choosing natural sweeteners when possible.
Q2: Can eating garlic or onions make my baby gassy or cause them to refuse the breast?
A2: Flavors from your diet, including garlic and onions, do pass into your breast milk, which can introduce your baby to a variety of tastes. While some babies might be sensitive to strong flavors and occasionally react with fussiness or temporary refusal, it's not common. If your baby seems fine after you eat these foods, there's no need to avoid them. Most babies tolerate them without issue, and early flavor exposure can even be a positive thing!
Q3: I'm vegan; what supplements should I definitely consider while breastfeeding?
A3: If you follow a vegan diet, it's particularly important to ensure adequate intake of vitamin B12, iron, iodine, choline, and omega-3 fats (EPA/DHA). Since plant-based foods may not provide sufficient amounts of these nutrients or they may be less readily absorbed, discussing specific supplementation with your healthcare provider or a registered dietitian is highly recommended to protect both your health and your baby's development.
Q4: If I have low milk supply, are there any foods I should absolutely avoid?
A4: While a balanced, nutritious diet is essential for milk production, some anecdotal reports and traditional practices suggest certain foods might negatively impact supply. These sometimes include high amounts of peppermint or sage. Additionally, excessive caffeine or very high doses of certain vitamins (like Vitamin C and B in supplements, not from whole foods) have been anecdotally linked to supply issues for some. If you are experiencing low milk supply, your first step should be to consult with a lactation consultant, as effective milk removal (frequent feeding/pumping) is the most critical factor. They can help you identify the root cause and develop a comprehensive plan. For added support, consider exploring our Milky Mama herbal lactation supplements or delicious lactation treats.
Embrace Your Breastfeeding Journey
Breastfeeding is a beautiful journey, and while what you eat plays a role, it doesn't have to be a source of stress or anxiety. Focus on nourishing yourself with a wide variety of wholesome, delicious foods, listen to your body, and pay attention to your baby's cues. Every drop counts, and your well-being matters just as much as your baby's. You're doing an amazing job!
For more support, education, and nourishing products designed for breastfeeding families, explore our website at milky-mama.com. You can also connect with our supportive community in The Official Milky Mama Lactation Support Group on Facebook and follow us on Instagram for daily inspiration and tips. We're here to empower you every step of the way!
Bestsellers
Emergency Lactation Brownies
Regular price
From $51.00 AUD
Regular price
Sale price
From $51.00 AUD
Unit price
per
$45.90 AUD
Subscribe & Save: 10% off
SHOP NOW
Lady Leche
Regular price
$39.00 AUD
Regular price
Sale price
$39.00 AUD
Unit price
per
$35.10 AUD
Subscribe & Save: 10% off
SHOP NOW
Bestseller Bundle
Regular price
$139.00 AUD
Regular price
Sale price
$139.00 AUD
Unit price
per
$125.10 AUD
Subscribe & Save: 10% off
SHOP NOW
Pump Hero
Regular price
$32.00 AUD
Regular price
Sale price
$32.00 AUD
Unit price
per
$28.80 AUD
Subscribe & Save: 10% off
SHOP NOW
