Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. Cardiopulmonary Impact of Electronic Cigarettes and Vaping Products: A Scientific Statement From the American Heart Association Circulation e Cigarettes, Vaping and the Risks of Severe Lung Disease Canyonlands Healthcare Vaping It's No Smoke and Mirrors When it Comes to Urinary Health Issues The Urology Group The impact of e cigarette exposure on different organ systems: A review of recent evidence and future perspectives ScienceDirect