Experts warn that flavored e cigarettes can cause irreversible lung damage, as seen in a U.S. teenager who developed "popcorn lung"a severe and permanent condition called bronchiolitis obliteransafter secretly vaping for three years. A Closer Look at Vaping Associated Lung Injury: What You Can Do for Your Patients 2FIRSTS The Dangers of Health E Cigarettes for Lung Damage: Study E Cigs Vapes: Where Did They Come From? Tobacco Prevention Toolkit Stanford Medicine Our researchers are studying the effects of vaping on the lungs and airway., They found several components in e cigarettes damage cells that help protect us from viruses. , Dr. Fariba Rezaee explains