Dr. Vivek Murthy said alcoholic beverages should carry cancer warnings to increase awareness that the drinks are a leading cause of preventable cancers.

Dr. Vivek Murthy’s report cites studies linking alcoholic beverages to at least seven malignancies, including breast cancer. But to add warning labels, Congress would have to act.

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.