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. No, Vaping Doesn't Cause Popcorn Lung Let's Set the Record Straight Doctors Say Vaping May Be Causing 'Popcorn Lung' Diacetyl & Popcorn Lung EDGE Vaping Is Diacetyl in Vapes? Crystal Vape & Crystal Bar & SKE Vape Official Station Understanding the Risks of Vaping Geek Bars and Elf Bars