Risks of E Cigarettes and Vape Pen Use Health Effects Vaping Information, Solutions & Interventions Toolkit Stanford Medicine Cases of Vaping Related Lung Illness Surge, Health Officials Say The New York Times Vaping and Electronic Cigarette (E Cigarette) Products Cattaraugus County Website Tobacco and E Cigarettes My Story Today 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.