VAPING & VAP: Lungs Under Attack E cigarette vapor linked to cancer in mice National Institutes of Health (NIH) New lung scans prove vaping is toxic. The science is officially in. Scans show that teens have developed "popcorn lung" as a result of vaping. It's a permanent, chronic disease that shortens E Cigarettes and Vaping OHSU E Cigarette User Has Rare Form of Lung Scarring Typically Found in Metal Workers Vaping, e cigarettes linked to 215 cases of severe lung illness in 25 states, including Pa., N.J.