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. Vaping vs Smoking: Effects and Tips for Protecting Your Lungs Max Hospital E cigarettes can result in 'Popcorn Lung' Curious about the difference between healthy lungs and a vaper's lungs? See how vaping impacts your lungs, and why it's best to quit early. Ministry of Health, Singapore Facebook