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. Elf bars: Doctor explains why you shouldn't use disposable vapes Diacetyl & Popcorn Lung EDGE Vaping Vaping can raise your risk of stroke, because it damages blood vessels and makes your blood clot easier. Nicotine and other chemicals increase blood pressure and cause inflammation, which can block blood Canadian teen develops 'popcorn lung' like vaping illness, unlike U.S. patients Do Geek Bars Have Diacetyl? EightVape