Alcohol Doesn't Help Breastfeeding
Science Contradicts the Folklore, Say Researchers
April 6, 2005 -- Alcohol doesn't improve breastfeeding, a new study shows.
That flies in the face of folklore, says researcher Julie Mennella, PhD, of Philadelphia's Monell Chemical Senses Center. She and her colleagues tested the popular belief -- and alcohol flunked.
A drink might make moms briefly feel more relaxed, but it doesn't help breast milk production, says Mennella's team in The Journal of Clinical Endocrinology & Metabolism.
In fact, alcohol could hinder milk production. "Recommending alcohol as an aid to lactation may be counterproductive," they write in the journal's April edition.
The American Academy of Pediatrics (AAP) recommends avoiding alcohol while nursing, as the alcohol can pass through breast milk to the baby. "If you choose to drink alcohol, drink it just after you nurse rather than just before," says the AAP's web page on breastfeeding and diet.
For centuries, traditional wisdom in many cultures has held that alcohol helps moms produce breast milk. But that belief lacks scientific evidence, according to the study.
Mennella's study amounted to a showdown for folklore. To see if alcohol lived up to its reputation, 17 healthy, breastfeeding moms drank orange juice with alcohol on one day and straight juice on another day. They didn't know which drink was which, since the drinks' smell and flavor were masked.
After each drink, the women's milk production (via a breast pump) was measured. The moms also gave blood samples every few minutes for an hour-and-a-half during the experiment, and their moods were noted.
The results showed that alcohol had no advantages for breast milk production.
Alcohol's Effects on Breastfeeding
Twelve of the 17 women produced less breast milk on the day they had the alcohol-spiked drink. On average, they produced 13% less breast milk than they did after drinking the alcohol-free juice.
Alcohol consumption affected two key hormones involved in milk production and breastfeeding. The women had lower levels of a hormone called oxytocin, a hormone believed to be responsible for milk released into the breast.
Alcohol also increased levels of two other hormones, cortisol and prolactin. Prolactin helps in milk production.