E Cigarettes Vaping with Juul & Other Electronic Cigarettes 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 Vaping: Safer than cigarettes or a new health crisis? Popcorn lung: What is it, and who is at risk? Harvard Health How Big Tobacco is Hooking Gen Z Respiratory Health Association Does vaping cause lung cancer? UT MD Anderson