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. What are the respiratory effects of e cigarettes? The BMJ Hidden toxins in e cigarette fluids may harm lung cells UCR News UC Riverside E cigarette and Vaping Associated Lung Injury (EVALI) EMOttawa Blog Outbreak of Lung Injury Associated with the Use of E Cigarette, or Vaping, Products Electronic Cigarettes Smoking & Tobacco Use CDC Vaping and Popcorn Lung: Separating Fact from Fiction Medic Pro