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. Thirdhand Vapor from E cigarettes Damages the Lungs of Mice Thirdhand Smoke Resource Center Vaping Leads To Lung Disease Cancer Lungs Mascot Holding Ecigarette Or Vape Device Internal Organ Need Medical Help Lungs Disease From Smoking And Vaping Stock Illustration Download Image Now iStock Some e cigarettes contain chemicals that cause popcorn lung Vox E Cigarette Research for Lung Cancer Patients Roy Castle