It's official. Flavored e cigarettes cause permanent lung damage. And doctors are already seeing it happen. In the United States, a teenager developed something called popcorn lung after secretly vaping for three years. Menthol added to vapes worsens lung damage, study suggests The Virginian Pilot E cigarette, or Vaping Product, Use Associated Lung Injury (EVALI) Fact Sheets Yale Medicine Vuse FAQs We Answer Your Vape Questions HERE! Vuse FAQs We Answer Your Vape Questions HERE!