Smoking cigarettes has long been proven to cause severe lung damage, including chronic obstructive pulmonary disease (COPD), emphysema, and lung cancer. Over time, cigarette smoke destroys lung tissue, fills airways with tar, Inhalation Toxicology of Vaping Products and Implications for Pulmonary Health PET imaging shows greater lung inflammation in e cigarette users than cigarette smokers New strong evidence that Juul is more toxic to lungs and hearts than earlier e cigs Stanton Glantz blog UNC Researchers Tackle the E cigarette or Vaping Product Useassociated Lung Injury (EVALI) Epidemic Newsroom