Carolina scientists show how vaping induces reactions in lungs that can lead to disease UNC Chapel Hill 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 Vaping: The Good, the Bad and the Popcorn Lung MPH Online Curious about the difference between healthy lungs and a vapers lungs? See how vaping impacts your lungs, and why its best to quit early.