The study finds daughters of women who drank during pregnancy could have an increased risk of breast cancer. Other studies have linked alcohol consumption to an increase in breast cancer risk. Experts believe the risk comes from alcohol's effect of increasing levels of estrogen in the body. Now, animal studies suggest the risk carries over to the daughters of drinking mothers.
Researchers studied rats exposed to alcohol in utero. Both the mother rats and their female offspring had higher breast density and more estrogen receptors, both of which have been linked to an increased breast cancer risk.
This study was conducted at Georgetown University Medical Center. It was presented at the American Association for Cancer Research Prevention meeting in Boston.