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, Vaping vs smoking health effects comparison Vaping damages young people's lungs as much as smoking, study suggests Vaping The Guardian Vaping: Safe? Or Are Your Lungs Going Up In Smoke? Healthy Lung vs Smoker's Lung Avant Medical