Breastfeeding Diet: What to Eat and What to Avoid When Breastfeeding

Just when you think the hard part of baby-making is behind you, it’s time to nurse the growing child. The good news is that, for the most part, your body knows what nutrition your baby needs, and your milk will probably be just right for your baby regardless of what you eat. That being said, when nursing, it’s extra important to eat a variety of nutrient-dense foods to benefit both you and your baby.

Here, we’ll cover how to get the nutrients you and your baby need while nursing. 

How much more should I eat while nursing?

Creating milk is demanding on the body, and you’ll likely need extra caloric support while nursing. Most nursing parents need 450-500 more calories per day. That’s about the amount in:

• A peanut butter-banana sandwich

• 2 eggs scrambled with milk, chopped veggies, and some cheese

• A cup of pesto pasta with parmesan cheese and chicken

• Almond milk, banana, oatmeal smoothie with honey and peanut butter

What should I eat while nursing?

The best foods for nursing will look a lot like the healthy plate suggestions you’re used to seeing. Choose fruits, vegetables, whole grains, dairy, eggs, nuts, and lean protein. In fact, babies often like tasting new foods through your milk. 

Generally, nursing parents who eat a variety of foods when they’re hungry don’t need to go out of their way to monitor their vitamin and mineral intake. The body does a fantastic job of going into storage to get the nutrients the baby needs. 

However, there are a few important nutrients for nursing to keep in mind. These include:

• Calcium is abundant in dairy foods and available in tofu, legumes, some nuts, seeds, and greens. 

• Zinc is found in whole grains, fortified in cereals, poultry, eggs, beans, and nuts. 

• Magnesium is found in legumes, nuts, seeds, dairy products, and fortified cereals.

• Vitamin B6 is found in poultry, fish, starchy vegetables like potatoes and non-citrus fruits.

• Folate is available in beef, fruit (especially oranges), leafy vegetables, nuts, beans, and fortified cereals. 

• Thiamin comes from meat (especially pork), whole grains, legumes, nuts, seeds, and fortified cereal.

What foods might help produce milk?

As a nursing mother, you may wonder if there are any galactagogues (teas, supplements, or foods) that can increase your milk supply. While there’s no definitive proof that consuming these will boost your milk production, many of them remain popular additions to a nursing parent’s diet. These galactagogues often vary depending on your culture. For example, in Korea, mothers may turn to seaweed soup, while in the U.S. they may eat lactation cookies with oats. 

There are some galactagogues, however, that are frequently touted with the ability to boost milk supply. For example ginger is a generally safe herb that some people find success using, though the evidence is only anecdotal. Fenugreek, on the other hand, Fenugreek is popular despite some anecdotal evidence saying it may actually decrease your milk supply.

If you want to try a supplement, keep in mind, the FDA doesn’t regulate supplements the same way they do medications, making it hard to know exactly what you are getting. In general, it’s best to speak to your healthcare provider if you’re concerned about your milk supply and considering galactagogues. 

For more information on the potential effects of specific supplements and medications supplements on lactation and nursing, refer to LactMed, a helpful database from the National Library of Medicine and the Toxicology Data Network (TOXNET). 

How can I make my milk more nutritious?

The best way to provide nutrient-rich milk is to eat a varied diet of fruits, vegetables, whole grains, nuts, seeds, dairy, and lean proteins. Nursing mothers usually give up a lot of vitamin A, vitamin B12, iron, and iodine while making milk. Talk to your healthcare provider about any supplements that could be helpful to you. They commonly recommend vitamin B12 and, if you are an adolescent or heavily menstruating, they may recommend iron.

Your healthcare provider may also recommend you continue prenatal vitamins while nursing. 

What should I avoid while nursing?

Like with a pregnancy diet, there are some restrictions to keep in mind with a nursing diet. Experts recommend limiting or avoiding the following foods and substances altogether. 

Fish

While the Center for Disease Control (CDC) says you can have some fish, take care to limit your consumption, and check safe seafood lists. Most fish contain some amount of mercury, which can affect the development of the baby’s brain and nervous system. But, it’s worth noting that the healthy fats, vitamins D, and vitamin B12 in fish can help with development. 

Caffeine

Caffeine is another substance to be careful about while nursing. It can be passed from mother to baby and can cause sleepless days or nights for both of you. Roughly two or three cups of coffee (300 to 500 mg of caffeine) a day should be OK for most people, but more can lead to a fussy, jittery baby. It’s important to note that preterm infants will metabolize more slowly so this amount may be too high. Lastly, don't forget other sources of caffeine such as soda, energy drinks, and chocolate.

Alcohol 

The American Academy of Pediatrics (AAP) suggests no more than 0.5 g of alcohol per kg of body weight when it comes to alcohol, which for a 60 kg (132-pound) mother, equals two beers or 8 ounces of wine. Ideally, wait until the baby is 3 months old, limit intake to one drink at a time, and wait to nurse for 4 hours after the drink.

Some medications

While many medications are OK to take while nursing, others are best avoided. To check if a medication you’re taking may affect your baby, visit the US National Library of Medicine (NLM) at the National Institutes of Health (NIH)’s database. And talk to your healthcare provider if you’re concerned about your current medications and your baby. 

Tobacco

If you smoke, it’s in the best interest of you and your baby that you make a plan to quit. Smoking can lead to issues like low milk supply and colic. If that isn’t possible, wait as long as possible between nursing and smoking — this will help limit the amount of nicotine that gets passed to your baby. 

Can my baby be sensitive to certain foods?

You don’t have to avoid common food allergens unless your healthcare provider advises you to. But, some babies are sensitive to certain foods. Signs include:

• Fussiness or inconsolable crying during or after feeding

• Diarrhea/watery stools, vomiting, or worsening spit ups

• Skin condition, like a rash or hives

• Discomfort

If you notice your baby reacting, consider tracking what you eat to look for patterns. 

 Some foods that babies can be sensitive to include:

• Dairy products

• Eggs

• Wheat, corn, or oats

• Soy

• Nuts

• Cruciferous vegetables, including broccoli, Brussels sprouts, and cauliflower

If you are worried about food sensitivities in your baby, talk to your healthcare provider right away.

Nursing as a vegetarian or vegan

If you follow a plant-based diet, it’s absolutely fine to maintain that while nursing. Talk to your healthcare about what supplements they might recommend. Since vitamin B12 is found in animal foods, you might need a supplement to support your baby’s neurological development.

Vegan or vegetarian mothers can produce milk with adequate nutrition for their infants. In fact, a review of studies found that being vegan, vegetarian or non-vegetarian made no difference to the nutritional quality of the milk.

Why trust our experts?

Written by:

Candace Nelson, MS, CN

Candace Nelson, MS, CN, is an award-winning journalist specializing in health and condition care. She is passionate about preventing chronic conditions.

Edited by:

Kelsey Abkin

Kelsey Abkin has been working as a journalist since 2016. She has held many titles throughout her career, including editor, content strategist, digital strategist, and writer.

Reviewed by:

Patricia Pinto-Garcia, MD, MPH

Patricia Pinto-Garcia, MD, MPH, is a medical editor at GoodRx. She is a licensed, board-certified pediatrician with more than a decade of experience in academic medicine.

Our editorial standards

Meet our experts