Health experts warn that flavored e cigarettes may lead to permanent lung damage. A U.S. teenager was diagnosed with "popcorn lung" after covertly vaping for three years, resulting in a lifelong, debilitating condition. Cardiopulmonary Consequences of Vaping in Adolescents: A Scientific Statement From the American Heart Association Circulation Research Health Effects Vaping Information, Solutions & Interventions Toolkit Stanford Medicine Pilot Study Shows Even Short Term 'Vaping' Causes Inflammation in Non Smokers