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. Should there be a Vuse Vape class action for health damages? Vaping: Get the Facts. Protect Your Future Anne Arundel County Health Department Pulmonary Illness Related to E Cigarette Use in Illinois and Wisconsin Final Report New England Journal of Medicine