Beer and Breastfeeding
Does beer support a mother's milk supply?
For generations, mothers have said yes. Modern research has tested the wrong beer. Here is what mothers report, what the ingredients contain, and what the history tells us.
The short answer
Mothers who pump report measurable increases the day after drinking 8 oz of a non-alcoholic, dark malty European-style beer with food. Alcoholic beer does not have the same effect — alcohol stalls the milk-ejection reflex.
Where would you like to begin?
Three doorways into the material. Read in any order.
For mothers
What to drink, how much, when, and what to avoid. Practical guidance for pumping and nursing mothers.
Enter →Ingredients
Barley, hops, yeast, water. What beta-glucan is, what studies on animals have observed, and why phyto-estrogens matter.
Enter →History
Wet-nurses and Dr. Routh, small beer and Nährbier, monastery brewing, Hildegard of Bingen, and the German purity laws.
Enter →The study that closed the question — and what it didn't test
In 1993, Dr. Julie Mennella and her colleagues published Beer, Breast Feeding, and Folklore. The study found that when a mother drinks beer, her baby nurses more slowly, leaving the mother with the impression of fuller supply when no real increase has occurred. The finding has shaped clinical guidance ever since.
The study used the light-coloured American lager that was widely available in the United States at the time. It did not test the beverage that mothers in earlier generations actually drank.
What was tested
Light American lager, around 5% alcohol, low in malt and beta-glucan.
What mothers drank historically
Low-alcohol, malt-rich "small beer" or non-alcoholic malt beer — high in beta-glucan, low or zero in alcohol.
Two cautions, read first
Alcohol
Alcohol stalls the milk-ejection reflex and slows milk flow. If you are working on milk supply, choose a non-alcoholic dark malty beer rather than an alcoholic one.
Gluten
Beer contains gluten. If you or your baby has a gluten sensitivity, beer is not the right choice — the malt that makes beer lactogenic is itself a gluten grain. Oats are a separate option worth looking at on the lactogenic diet site.