Does Fish Increase Milk Supply? A Guide for Nursing Moms

Posted on March 03, 2026

Can Eating Fish Increase Your Milk Supply?

Introduction
The Role of Nutrition in Lactation
Does Fish Increase Milk Supply?
Choosing the Right Fish: Safety and Mercury
The Connection Between Hydration and Milk Supply
Practical Ways to Add Fish to Your Diet
Beyond Fish: A Holistic Approach to Supply
Dealing with Supply Anxiety
Why Support Matters
Conclusion
FAQ

Introduction

If you have ever stared at your breast pump or watched your baby sleep and wondered if you are producing enough, you are not alone. It is completely normal to worry about your milk supply. Many parents look for specific foods to help give their bodies a boost. One question we hear often is: does fish increase milk supply?

At Milky Mama, we believe that education is the best tool for a successful breastfeeding journey. Founded by Krystal Duhaney, a Registered Nurse and International Board Certified Lactation Consultant (IBCLC), we are here to provide the clinical expertise and heart-centered support you need. In this article, we will explore how certain types of fish can support your lactation goals and which ones you should skip. We will also look at the nutrients that make fish a popular choice for nursing parents.

The short answer is that while fish can be a powerful part of a lactation-friendly diet, it works best when combined with frequent milk removal and proper hydration.

The Role of Nutrition in Lactation

Breastfeeding is one of the most demanding things your body will ever do. It is natural, but that does not mean it is always easy. Your body needs extra energy to produce milk, often requiring an additional 330 to 500 calories per day. What you eat provides the building blocks for that milk and keeps your own energy levels high.

When people talk about foods that increase milk, they often use the word "galactagogue." A galactagogue is simply a substance—whether a food, herb, or medication—that is believed to help increase breast milk production. While most galactagogues are plant-based, some animal proteins like fish play a supportive role in this process.

It is important to remember that no single food is a magic switch for milk supply. Your body operates on a supply and demand system. This means the more milk you remove through nursing or pumping, the more milk your body will make. However, eating nutrient-dense foods like fish can support the hormones and energy levels required to keep that system running smoothly.

If you want a deeper dive into meal choices, our guide on what to eat while breastfeeding is a helpful place to start.

Why Protein Matters for Milk Production

Protein is a critical component of breast milk. It helps your baby grow and supports their developing immune system. Because you are sharing your protein stores with your little one, you need to replenish those stores daily.

Fish is a high-quality source of lean protein. It is often easier for the body to digest than some red meats. When you have adequate protein in your diet, you may feel more satisfied and energized. This energy is essential for the late-night feedings and active days that come with a new baby.

Understanding Essential Fatty Acids

One of the main reasons fish is linked to milk supply and quality is its high concentration of Omega-3 fatty acids. These include DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid). These fats are considered "essential" because your body cannot make them on its own. You must get them from your diet.

While Omega-3s may not directly increase the volume of milk for every person, they significantly improve the quality of the milk. DHA is a major building block for your baby’s brain and eye development. Studies have shown that when a nursing parent consumes more DHA, the levels of DHA in their breast milk rise accordingly.

Does Fish Increase Milk Supply?

Many cultures have traditionally used fish soups and stews to help new mothers recover and boost their milk. Specifically, oily fish like salmon are frequently cited as milk-boosting foods.

The theory is that the combination of high protein, healthy fats, and Vitamin D helps regulate the hormones involved in lactation. When your body is well-nourished and your hormone levels are balanced, it is easier for your milk to "let down." This let-down reflex is what allows the milk to flow from the breast to your baby.

If you are also focused on pumping, our article on how pumping output compares to nursing intake may help you understand what you are seeing at the bottle.

Salmon: The Lactation Superfood

Salmon is often at the top of the list for breastfeeding-friendly foods. It is rich in Vitamin D, which many people are deficient in. Vitamin D is essential for bone health and immune function for both you and your baby.

Key Takeaway: Salmon provides a powerful mix of DHA, protein, and Vitamin D. These nutrients support the hormonal balance needed for healthy lactation and provide the high-quality fats your baby needs for brain development.

If you enjoy salmon, adding it to your weekly meal plan can be a great way to support your body. It is versatile, quick to cook, and widely available.

Other Supportive Fish Options

Beyond salmon, other low-mercury fish can be beneficial. Sardines and herring are also excellent sources of Omega-3s. While they might not be as common in the US diet as salmon, they are nutritional powerhouses for nursing parents.

White fish like cod, tilapia, and flounder provide excellent lean protein. While they have lower levels of Omega-3s than oily fish, they still contribute to your overall nutritional needs. When you feel strong and well-fed, your body can focus on the task of making milk.

Choosing the Right Fish: Safety and Mercury

While fish can be a great addition to your diet, you do need to be mindful of what you choose. Some fish contain high levels of mercury. Mercury is a heavy metal that can pass through your breast milk to your baby. In high amounts, it can affect a baby's developing nervous system.

This does not mean you should avoid fish entirely. It simply means you should be a "smart" consumer of seafood. The benefits of the healthy fats in fish usually outweigh the risks, as long as you choose low-mercury varieties.

Fish to Avoid While Breastfeeding

As a general rule, the larger and older the fish is, the more mercury it likely contains. This is because mercury accumulates as it moves up the food chain. You should try to avoid the following fish while you are nursing:

Shark
Swordfish
King Mackerel
Tilefish from the Gulf of Mexico
Bigeye Tuna
Marlin
Orange Roughy

Best Fish Choices for Nursing Moms

The FDA and EPA recommend that breastfeeding parents eat 2 to 3 servings of "Best Choice" fish per week. One serving is about 4 ounces, which is roughly the size of a deck of cards.

Excellent, low-mercury options include:

Salmon
Anchovies
Sardines
Atlantic Mackerel
Shrimp
Pollock
Cod
Tilapia
Catfish

What to Do Next for Safer Seafood:

Limit your intake of white (albacore) tuna to 6 ounces per week.
Check local advisories if you are eating fish caught by friends or family in local lakes and rivers.
Aim for a variety of different types of fish rather than sticking to just one.
If you do not like fish, talk to your provider about a high-quality DHA supplement.

The Connection Between Hydration and Milk Supply

You cannot talk about milk supply without talking about hydration. Breast milk is roughly 87% water. If you are dehydrated, your body may struggle to produce the volume your baby needs.

Many moms find that they become incredibly thirsty the moment their baby latches. This is a signal from your body to drink up! While water is the gold standard, we know it can get boring.

To help make hydration more enjoyable, we created drinks like Pumpin' Punch™ and Milky Melon™. These are designed to provide hydration along with lactation-supporting ingredients. Staying hydrated is just as important as eating your protein and healthy fats. Our Lactation LeMOOnade™ is another favorite for those who want a refreshing way to support their supply.

If you want a full overview of the drink lineup, the Lactation Drink Mixes collection is a convenient place to browse.

Practical Ways to Add Fish to Your Diet

If you are exhausted and caring for a newborn, the idea of cooking a gourmet fish dinner might feel overwhelming. You need simple, fast options.

Here are a few ways to include more fish without spending hours in the kitchen:

Canned Salmon or Sardines: These are pre-cooked and ready to eat. You can mix canned salmon with a little Greek yogurt or avocado for a healthy salmon salad.
Sheet Pan Meals: Place a salmon fillet and some asparagus on a baking sheet. Drizzle with olive oil and lemon. Bake at 400°F for about 12–15 minutes.
Frozen Fillets: Keep frozen cod or tilapia in your freezer. They thaw quickly and can be pan-seared in minutes.
Fish Tacos: Use white fish like tilapia. Sauté it with some lime and cumin, and serve it in corn tortillas with slaw.

Beyond Fish: A Holistic Approach to Supply

While does fish increase milk supply is a great question, it is only one piece of the puzzle. At Milky Mama, we look at the whole picture. Your supply is influenced by your stress levels, your sleep (as much as possible with a baby!), and how often you are emptying your breasts.

If you find that your supply is still not where you want it to be after adjusting your diet, you might need additional support. Our lactation supplements collection is designed for parents who want more targeted options.

For example, Lady Leche and Pumping Queen are popular choices for those looking for a boost. Many of our customers also love our Emergency Lactation Brownies, which are packed with ingredients like oats and flaxseed. These treats are designed to be a convenient and delicious way to support your lactation journey.

Important Note: This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice. Always speak with a professional before starting new herbal supplements, especially if you have underlying health conditions.

Dealing with Supply Anxiety

It is very common for parents to feel like their supply is low when it is actually perfectly normal. Your breasts may feel "soft," or your baby may go through a period of "cluster feeding" where they want to eat every hour. These are often normal signs of growth or your body regulating its supply, rather than a sign that you are failing.

If your baby is having plenty of wet and dirty diapers and is gaining weight, you are likely doing an amazing job. However, if you are truly concerned, reaching out to an IBCLC is the best step. They can check your baby's latch and help you create a plan that works for your specific needs. For extra support, our Certified Lactation Consultant Breastfeeding Help page can point you in the right direction.

Remember, breastfeeding is a journey. There will be high points and challenges. Whether you nurse for one month or two years, every drop counts. You are providing incredible nutrition and comfort to your baby.

Why Support Matters

Breastfeeding is natural, but it doesn't always come naturally. In many cultures, new mothers were surrounded by a "village" that handled the cooking and cleaning so the mother could focus entirely on feeding her baby. In our modern world, that village is often missing.

That is why we strive to be part of your village. We provide virtual lactation consultations and online classes to ensure you never have to guess. If you want structured education, our Breastfeeding 101 course is a strong next step. Representation matters, and we are especially committed to supporting Black breastfeeding moms and ensuring all families feel seen and empowered.

Conclusion

So, does fish increase milk supply? It can certainly be a valuable part of a diet that supports lactation. By providing high-quality protein, Vitamin D, and essential Omega-3 fatty acids, fish helps create the nutritional foundation your body needs to produce milk. Just remember to stick to low-mercury options like salmon and sardines to keep things safe for your little one.

Focus on a balanced diet, stay hydrated with options like our Pumpin' Punch™, and remember the rule of supply and demand. If you want more practical ideas for building your routine, our guide on how to support milk supply while exclusively pumping offers a helpful framework. You are doing the hard work of nourishing a human being, and your well-being matters just as much as your milk supply.

Prioritize low-mercury fish like salmon 2–3 times a week.
Keep your body hydrated to support milk volume.
Focus on frequent milk removal to signal your body to make more.
Be kind to yourself—stress can impact your let-down reflex.

Final Thought: You're doing an amazing job. Your body was literally created to feed your baby, but it's okay to ask for help along the way. Whether you need a lactation treat or a consultation, we are here for you.

If you are looking for more ways to support your journey, explore our lactation treats collection and Lactation Brownies collection. We would love to help you feel confident and empowered as you feed your baby.

FAQ

Can I eat sushi while breastfeeding?

Yes, you can generally eat sushi while breastfeeding, as the risk of foodborne illness is mainly a concern for the pregnant parent rather than the baby through breast milk. However, you should still stick to sushi made with low-mercury fish and ensure it comes from a reputable source. Avoid high-mercury raw fish like bigeye tuna or marlin.

How much salmon should I eat to see a difference?

Most health organizations recommend eating 8 to 12 ounces of low-mercury fish per week, which is about 2 to 3 servings. While salmon is excellent for providing DHA and Vitamin D, remember that diet is a support system for the primary drivers of milk supply: frequent nursing and pumping. Consistency in your diet and milk removal is more effective than any single large meal. If you want to understand timing for supportive products, our article on how long lactation drinks take to work is a useful read.

What if I am allergic to fish or do not like it?

If you cannot eat fish, you can still maintain a healthy milk supply by getting protein and healthy fats from other sources. Walnuts, chia seeds, and flaxseeds are great plant-based sources of Omega-3s, though the body converts them differently than the oils found in fish. You may also want to talk to your doctor about a algae-based DHA supplement to ensure your milk contains these vital fats.

Will eating fish make my breast milk taste fishy?

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Does Fish Increase Milk Supply? A Guide for Nursing Moms

Table of Contents

Introduction