A growing body of evidence has shown that there is a link between alcohol and cancer, but not everyone is aware of the link. Public health authorities around the world, including the US Surgeon General, are taking greater steps to educate the public about the connection. Eric Rimm, a professor and epidemiologist at the Harvard T.H. Chan School of Public Health, who has studied the connection, explains the scientific mechanisms at play, and how much alcohol increases the risks of cancer.