Health experts warn that flavored e cigarettes may lead to permanent lung damage. A U.S. teenager was diagnosed with "popcorn lung" after covertly vaping for three years, resulting in a lifelong, debilitating condition. Vaping and Popcorn Lung: Separating Fact from Fiction Medic Pro Did you know vaping and e cigarettes can lead to a condition called Popcorn Lung? Vaping may sound harmless, but it can seriously impact your breathing over time. Learn what causes it, how Lung injuries should be a warning about vaping's risks American Heart Association