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. Vaping Associated Pulmonary Injury Physiopedia Vaping and Popcorn Lung: Separating Fact from Fiction Medic Pro Popcorn Lung Pictures From Vaping What Is Popcorn Lung? Can You Get It From Vaping? Best E Cigarette Guide What Causes Australia Cases of Vaping Related Lung Illness Surge, Health Officials Say The New York Times Lung injuries should be a warning about vaping's risks American Heart Association