While vaping is not risk free, it is less harmful than tobacco Our World in Data E Cigarette Use, Small Airway Fibrosis, and Constrictive Bronchiolitis NEJM Evidence Does vaping cause lung cancer? UT MD Anderson 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 World Lung Day: WAKE UP! DON'T VAPE UP! European Network