Experts say that flavored e cigarettes can cause irreversible lung damage. A U.S. teen developed "popcorn lung" after secretly vaping for 3 years a permanent, life altering disease. Officially known as bronchiolitis obliterans, What is Popcorn Lung? Popcorn Lung is a serious, permanent lung disease caused by inhaling harmful chemicals like diacetyl, sometimes found in flavored vapes. Tips for Parents & Caregivers: Talk Vaping and Popcorn Lung: Separating Fact from Fiction Medic Pro Popcorn lung: What is it, and who is at risk? Harvard Health E Cigarettes Vaping with Juul & Other Electronic Cigarettes Signs Vaping May Be Causing You Long Term Damage HMH NJ