Frontiers Direct health implications of e cigarette use: a systematic scoping review with evidence assessment Emerging Phenomenon of Electronic Cigarettes Page 3 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 Facts Tobacco Free Amarillo Effects of smoking, vaping and e cigarettes on the body POSTER Teaching Resources What Does Vaping Do to Your Brain? University of Nevada, Reno