A recent case involving a U.S. teenager who developed Bronchiolitis Obliterans, commonly called popcorn lung, after three years of secretly vaping has raised serious concerns about the risks of e cigarettes. This irreversible While vaping is not risk free, it is less harmful than tobacco Our World in Data What Is Popcorn Lung and Why Is It Being Discussed? iSmokeKing.se E Cigarette Use, Small Airway Fibrosis, and Constrictive Bronchiolitis NEJM Evidence Health experts are sounding the alarm about a serious condition linked to vaping, known as "popcorn lung" or bronchiolitis obliterans. This irreversible lung disease is caused by harmful chemicals, like diacetyl, found Does vaping cause lung cancer? UT MD Anderson