While vaping is not risk free, it is less harmful than tobacco Our World in Data CDC E cigarette public recommendations Infographics.png.aspx 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