Harvard study finds lung damaging toxins in popular e cigarette products PhillyVoice Yes, vaping is toxic and the consequences can be permanent. A U.S. teenager developed popcorn lung a life altering, incurable condition after secretly vaping flavored e cigarettes for Do alternative tobacco products induce less adverse respiratory risk than cigarettes? Respiratory Research Springer Nature Link UNC Researchers Tackle the E cigarette or Vaping Product Useassociated Lung Injury (EVALI) Epidemic Newsroom A Lung Doctor Takes On E Cigarettes This lung damage from e cigarettes is permanent and entirely preventable. Flavored e cigarettes, often marketed with candy like appeal, may be far more dangerous than they seem. A recent case involving a U.S.