Lung cancer risks persist with e cigarette use after quitting tobacco smoking The evidence is clear: Young E cigarette users suffer from respiratory symptoms American Lung Association E Cigarette or Vaping Associated Lung Injury New England Journal of Medicine A systematic review of the effects of e cigarette use on lung function npj Primary Care Respiratory Medicine MRI offers noninvasive way to assess effects of vaping, smoking AuntMinnie Vapes '95% safer' than cigarettes messaging backfired