According to a Kaiser Permanente study, women who drink more than three drinks alcoholic a day—wine, beer or spirits—were 30 percent more likely to develop breast cancer than those who had less than one drink a day. Out of the 70000 women who drank every day, 3000 were diagnosed with breast cancer. Despite their findings, head researcher Yan Li says genetics, family history and age are the top risk factors for developing breast cancer.