Vaping isn't harmless. While e cigarettes don't contain tobacco, nicotine is highly addictive and can harm brain development. E cigarettes can cause EVALIa serious lung injury linked to vaping. Symptoms like cough, chest Does vaping cause lung cancer? UT MD Anderson Vaping isn't just a trendit's a growing health risk. Studies have linked e cigarette use to serious lung conditions like Bronchiolitis Obliterans, often called popcorn lung, which damages the smallest airways and permanently Some e cigarettes contain chemicals that cause popcorn lung Vox