Drinking alcohol can put you at increased risk of breast cancer by enhancing the levels of a cancer-causing gene new research has found. Our research shows alcohol enhances the actions of estrogen in driving the growth of breast cancer cells and diminishes the effects of the cancer drug Tamoxifen on blocking estrogen by increasing the levels of a cancer-causing gene called BRAF said one of the researchers Chin-Yo Lin assistant professor at University of Houston in the US. The findings appeared in the journal PLOS ONE. The study objective was to determine how alcohol can affect the actions of estrogen