The Conversation: Alcohol causes cancer, and less than 1 drink can increase your risk โˆ’ a cancer biologist explains how Alcohol causes cancer, and less than 1 drink can increase your risk โˆ’ a cancer biologist explains how While research on alcohol is evolving, the Centers for Disease Control and Prevention (CDC) says drinking less or not at all is better for your health. Some people with atopic dermatitis (AD), the ...