Frontiers Direct health implications of e cigarette use: a systematic scoping review with evidence assessment E Cigarettes Fact Sheet Center for Public Health and Tobacco Policy Disturbing Trends with E Cigarettes in Schools Researchers: Rethink e cigarettes' role in treating cigarette smokers' nicotine addiction News University of Michigan School of Public Health Faculty Research Health Management and Policy Cigarettes E Cigarettes Vaping Smoking Cessation E Cigarettes: Decoding What's Behind The Vapor Vaping 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.