Are Menthol Vuse Vapes Safe? FDA Says No. Does vaping cause lung cancer? UT MD Anderson Health officials investigating dangers of vaping, verifying danger New lung scans prove vaping is toxic. The science is officially in. Scans show that teens have developed "popcorn lung" as a result of vaping. It's a permanent, chronic disease that shortens Popcorn lung: What is it, and who is at risk? Harvard Health 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,