WASHINGTON (AP) — Alcohol is a leading cause of cancer, a risk that should be clearly labeled on drinks Americans consume, U.S. Surgeon General Vivek Murthy proposed on Friday. Murthy’s advisory comes as research and evidence mounts about the bad effects that alcohol has on human health. Americans should be better informed about the link between alcohol and cancer, in particular, Murthy argues. About 20,000 people die every year from those alcohol-related cancer cases, according to his advisory. Bottles of beer, wine and liquor already carry warning labels about the risk of birth defects when a pregnant woman consumes alcohol. But Murthy’s proposed label would go even further, raising awareness about the risk for cancer, too.