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. What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Can lung damage from vaping heal? Allen Carr's Easyway I'm obviously still grieving:' Contact 6 with new information on what's causing vaping deaths FOX6 Milwaukee