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WASHINGTON — 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, but his proposal for a label would require a rare approval from the U.S. Congress.

Americans should be better informed about the link between alcohol and cancer, in particular, Murthy argues in his advisory, noting alcohol consumption is to blame for nearly one million preventable cancer cases in the U.S. over the last decade. About 20,000 people die every year from those alcohol-related cancer cases, according to his advisory.