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 Mouth to Lung v Direct to Lung Vaping What's the Difference? 88Vape Carolina scientists show how vaping induces reactions in lungs that can lead to disease UNC Chapel Hill Vaping, Even Without Nicotine, Has Negative Effect on Lungs