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. Restored CDC Youth and Tobacco Use Smoking and Tobacco Use CDC A Comprehensive Review of the Harmful Compounds in Electronic Cigarettes The Health Risks Of E Cigarettes Versus Traditional Cigarettes Henry Ford Health Detroit, MI Vaping Produces Far Less Second Hand Nicotine Than Smoking Respiratory Therapy