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. Do Thc Vapes Cause Popcorn Lung The Mysterious Vaping Illness That's 'Becoming an Epidemic' Popcorn lung: Teen first case of life threatening vaping injury Does Vaping Or Smoking Marijuana Cause Lung Cancer? SERO