Drinking excessive amounts of alcohol increases the risk of cancers of the mouth, esophagus, pharynx, larynx, throat and liver in men and women, and of breast cancer in women.
Generally, these risks increase after about one daily drink for women and two daily drinks for men. (A drink is defined as 12 ounces of regular beer, 5 ounces of wine, or 1.5 ounces of 80-proof liquor.)