Popcorn lung: What is it, and who is at risk? Harvard Health Study links e cigarettes to incurable disease called 'Popcorn Lung' MD Spiro What is Popcorn Lung and Can Vaping Cause It? Health BeatHealth Beat It's a Fact. Vaping Can Cause Popcorn Lung Poster ToucanEd Popcorn Lung vs. Lung Cancer: Understanding the Critical Differences (and Why It Matters) Health officials investigating dangers of vaping, verifying danger