Flavored e cigarettes are not harmless. Doctors are now seeing teens with permanent lung damage from vaping. In the U.S., a teenager developed popcorn lung after vaping in secret for three years. This The Truth About What Vaping Is Doing to Your Body American Lung Association Yes, vaping is toxic. A U.S. teen developed "popcorn lung" after secretly vaping for three years a permanent, life altering disease. Officially known as bronchiolitis obliterans, the condition scars the lungs' tiniest What Causes Does Vaping Cause Popcorn Lung? Africa Harm Reduction Alliance Microwave Popcorn Lungs Australia Does Vaping Cause Lung Cancer? New strong evidence that Juul is more toxic to lungs and hearts than earlier e cigs Stanton Glantz blog