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, Environmental Toxicants Exposure, and Lung Cancer Risk Oregon Health Authority : Vaping and Your Health : Substance Use : State of Oregon Health effects of electronic cigarettes Wikipedia Psychiatry.org Vaping is Unhealthy. Tips and Resources to Help Quit. The Dangers of Vaping How E Cigarettes Affect Student Health