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, The Truth About What Vaping Is Doing to Your Body American Lung Association Young Adults Who Vape Cannabis Are More Likely To Experience Cough, Bronchitis And Wheezing, Study Finds CBS Baltimore While vaping is not risk free, it is less harmful than tobacco Our World in Data