Health effects of electronic cigarettes Wikipedia 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 How Risky Is Vaping? Northern Nevada Health, Sparks, Nevada Chemical linked to 'popcorn lung' found in flavored e cigarette: study 2015 12 16 Common e cigarette chemical flavorings may impair lung function Harvard T.H. Chan School of Public Health Chemical Composition of Aerosols from the E Cigarette Vaping of Natural and Synthetic Cannabinoids Chemical Research in Toxicology