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. Health Effects of Vaping Smoking and Tobacco Use CDC Quitting smoking in favour of e cigarettes leads to rapid improvement in cardiovascular health Prevention Observatory of the Montreal Heart Institute New Infographic Sheds Light on the Truth Behind the Vaping and E Cigarettes Newswire