Which Foods Increase Breast Milk Supply?

Many new mothers hear that certain foods can boost their milk supply, and the short answer is that some foods have evidence behind them while many popular claims are not backed by solid research. Oats, barley, and certain vegetables like fennel and carrots appear in traditional wisdom and some small studies. But the most reliable way to increase milk supply is frequent, effective milk removal — either by nursing or pumping. Foods can support that process, but they are not a replacement for the basic mechanics of lactation.

Does Eating Specific Foods Actually Increase Breast Milk Supply?

The honest answer is that the evidence is mixed. Some foods have been studied in small trials and show modest effects. Others are passed down through cultural traditions without much scientific testing.

Research published in the journal Breastfeeding Medicine found that mothers who ate oats experienced a small increase in milk volume compared to those who did not. The effect was real but not dramatic. Another study on fenugreek — a common herb in lactation teas — found that some women responded well while others saw no change at all.

What matters most is that no single food will fix a low supply on its own. If your baby is not nursing effectively or if you are not pumping frequently enough, no amount of oatmeal or lactation cookies will make up for that. Foods are support tools, not primary solutions.

Which Galactagogues Have the Best Research Behind Them?

Galactagogues are substances believed to boost milk production. The term covers foods, herbs, and medications. Here is what the evidence says about the most common ones.

• Oats: A 2020 randomized trial found that mothers eating oat porridge daily for 30 days produced more milk than a control group. The mechanism is unclear but may relate to beta-glucan, a type of fiber that affects prolactin levels.
• Fenugreek: Some studies show a modest increase in milk volume, but others show no effect. A 2018 review in Phytotherapy Research concluded the evidence is too weak to recommend it universally. Some women also report a maple syrup smell in their urine and breast milk.
• Barley: Traditional use is strong. One small study from 2015 found that barley water increased milk supply in mothers of preterm infants. More research is needed.
• Fennel and anise: These herbs contain compounds that may mimic estrogen. Animal studies suggest an effect, but human trials are very limited.

The bottom line is that oats have the most consistent support. Fenugreek works for some but not all. For most other foods, the evidence is thin.

What About Lactation Cookies, Teas, and Supplements?

Lactation cookies are popular on social media. They usually contain oats, flaxseed, brewer’s yeast, and sometimes fenugreek. The ingredients individually have some support, but the cookies themselves have not been studied. There is no clinical trial proving that eating a cookie increases milk supply more than eating a bowl of oatmeal.

Lactation teas are similar. They often contain a blend of herbs like fenugreek, blessed thistle, and fennel. A 2021 study in Nutrients tested a commercial lactation tea and found that mothers who drank it reported feeling more satisfied with their milk production, but actual measured milk volume did not differ from the placebo group. This suggests a possible placebo effect.

Supplements are a bigger concern. The FDA does not regulate them the way it regulates medications. A 2020 analysis of popular lactation supplements found that many contained less fenugreek than advertised, and some contained heavy metals. If you choose a supplement, look for one that has been third-party tested by an organization like USP or NSF.

What Foods Should You Avoid While Breastfeeding?

There is no strong evidence that any specific food directly reduces milk supply in most women. But some things can indirectly affect it.

Sage, peppermint, and parsley in very large amounts have traditional reputations for decreasing supply. One case report in the Journal of Human Lactation described a mother who drank strong peppermint tea daily and saw a drop in milk that reversed when she stopped. Normal culinary use is unlikely to cause problems, but concentrated teas or essential oils might.

Alcohol can interfere with the let-down reflex. Research shows that alcohol consumption reduces the amount of milk a baby takes during a feed. It does not permanently lower supply, but regular drinking can disrupt the nursing pattern that maintains supply.

Caffeine in moderate amounts — under 300 mg per day, about two to three cups of coffee — is fine. Higher amounts may make some babies irritable but do not reduce milk volume.

Staying hydrated is important, but drinking excessive water does not increase supply. Your body regulates fluid balance tightly. Drinking when you are thirsty is sufficient.

How Do Hydration and Nutrition Affect Milk Production?

Your body needs about 500 extra calories per day to produce milk. Those calories should come from nutrient-dense foods, but the exact composition matters less than total intake. If you are not eating enough, your body may reduce milk production to conserve energy.

Dehydration is a common concern, but mild dehydration does not appear to reduce milk volume. A 2014 study in Pediatrics found that mothers who drank extra water beyond their thirst did not produce more milk. Drink when you are thirsty. That is sufficient.

Skipping meals can reduce supply. Your body prioritizes its own needs first. If you are not consuming enough calories, milk production may drop. Eating regular meals with protein, fat, and carbohydrates supports steady production.

What Is the Most Effective Way to Increase Milk Supply?

Foods can help, but the most effective method is frequent and effective milk removal. Your breasts produce milk based on demand. The more milk is removed, the more your body makes.

Research shows that pumping after nursing — called power pumping — can increase supply in about three to five days. The protocol involves pumping for 20 minutes, resting for 10, pumping for 10, resting for 10, and pumping for 10 more. Doing this once daily for a week often produces noticeable results.

Skin-to-skin contact with your baby also stimulates prolactin and oxytocin, the hormones that drive milk production. A 2019 study in Acta Paediatrica found that mothers who practiced skin-to-skin care for at least one hour daily had higher milk volumes at two weeks postpartum.

If you have tried these methods and still have low supply, see a lactation consultant. Some causes of low supply — like insufficient glandular tissue, thyroid problems, or a tongue-tie in the baby — cannot be fixed with food alone.

Common Misconceptions About Foods and Milk Supply

Myth: Drinking cow’s milk increases your milk supply. There is no evidence for this. Dairy is a good source of calcium and protein, but it does not directly affect milk volume.

Myth: Eating spicy foods will upset your baby. Spices pass into breast milk in tiny amounts. Most babies tolerate them fine. In fact, exposure to different flavors through breast milk may help babies accept a wider variety of solid foods later.

Myth: You need to drink milk to make milk. This is a common saying but it is not true. Your body will use calcium from your bones if you do not get enough from food. Drinking milk is optional. Other calcium sources work just as well.

Myth: Lactation cookies are a guaranteed solution. They are baked goods with oats and brewer’s yeast. They may help a little, but they are not medicine. If they replace a balanced meal, they could even hurt your nutrition.