Most E cigarette Users Ages 18 to 29 Never Smoked Before American Cancer Society E cigarette use doubles among U.S. teens Does e cigarette use increase the risk of cancer? New grant will help researchers understand ways to reduce e cigarette and cigarette use among teens Arnold School of Public Health University of South Carolina E cigarettes: Facts, stats and regulations Vaping may be causing irreversible harm to children's health, doctors say Vaping The Guardian