E cigarettes cause permanent lung damage 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. Pulmonary Injury Resulting from Vaping or e Cigarette Use: Imaging Appearances at Presentation and Follow upRadiology: Cardiothoracic Imaging E Cigarette or Vaping Associated Lung Injury New England Journal of Medicine