The Truth About Brewer's Yeast and Breastfeeding

As a new Mom, you’re most likely asking “What can I do to increase my milk supply?” Taking care of a little one can be overwhelming, but While there are many ways to boost milk production, one natural solution reigns as one of the most effective and has been for centuries. 

How Exactly Does Brewer's Yeast Boost Milk Supply?

Two words: brewer's yeast. It’s a bit different from nutritional yeast if you’re familiar with that. It’s a type of yeast commonly used in the production of beer and bread that happens to be packed with essential nutrients such as protein, iron, zinc, and B vitamins. These are all key elements in increasing your breast milk supply. 

There are several mechanisms by which it is believed to have this empowering, milky effect. Brewer's yeast is rich in B vitamins such as thiamine, riboflavin, and niacin. These vitamins are essential for increasing lactation and are involved in the metabolism of carbohydrates, proteins, and fats, all of which are important components of breast milk. Furthermore, they help to support the nervous system's health, necessary for the release of hormones that stimulate milk production.

breastfeeding mom feeding son in her arms

Brewer's Yeast is a Great Source of Chromium

A mineral essential for insulin function. Insulin is crucial for the uptake of glucose into cells, and it is also involved in the production of prolactin, a hormone that stimulates milk production. By supporting insulin function, brewer's yeast may indirectly help to increase milk production.

Brewer's Yeast Contains Phytoestrogens

Which are plant compounds that have a weak estrogen-like effect in the body. Estrogen is a hormone necessary for the development of breast tissue and milk ducts, as well as the production of milk. By providing a source of phytoestrogens, brewer's yeast may help to support the hormonal balance necessary for lactation.

A study published by the National Institute of Child Health and Human Development found that women who consumed brewer's yeast had a significant increase in milk production compared to those who didn’t. 

three women scientists at table outside with plants analyzing results from a study

Brewer's yeast is an excellent natural option for nursing Moms looking to boost their breast milk supply. The versatile superfood contains an array of essential nutrients and galactagogues that support lactation and hormonal balance. While it’s generally considered safe, it’s essential to consult with your healthcare provider before taking any supplements. By incorporating brewer's yeast into your diet, you can give your body the support it needs to provide the best nutrition for your little one.

Find brewer’s yeast in our Soft-baked Lactation Cookies and Brownies as well as our Lactation Overnight Oats.

Lactation Love,

If you have any questions, don’t hesitate to contact us at to talk to our resident breastfeeding alum who’s a brewer’s yeast biggest fan!

1 comment

  • Hello. I am interested that brewer’s yeast helps with human milk production.
    Do you have any scientific resources or research papers on this?
    I would love to read it if you could provide it.

    imji on

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