Cardiopulmonary Impact of Electronic Cigarettes and Vaping Products: A Scientific Statement From the American Heart Association Circulation The Teen Vaping Crisis California Teachers Association Health Effects of Smoking on Your Body How E Cigarettes Affect Your Body 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. Vaping Related Illness and Lung Disease NEJM