What's behind a vaping illness outbreak in the US? 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 Smoking or vaping both harm your health., They damage your lungs, strain your heart, weaken immunity, and reduce overall well being., Choosing less harmful doesnt mean choosing safe., Your health Can vaping damage your lungs? What we do (and don't) know Harvard Health Vaping: Understanding the Risks and Impacts on Health