Analysis suggests e cigarette use may be linked to lower rates of smoking An e cigarette is a battery operated device that heats liquid nicotine, flavoring, and other additives to create an aerosol. This JAMA Patient Page describes e cigarettes and the potential health effects of vaping. https: ja.ma 4dbZqrL Johns Hopkins Medicine Team Proposes Ways to Regulate and Better Manage E Cigarette Use Johns Hopkins Medicine Army issues public health alert after multiple severe lung illness cases associated with vaping Article The United States Army How E Cigarettes Affect Your Body