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. CDC E cigarette public recommendations Infographics.png.aspx Vaping May Increase Respiratory Disease Risk by More Than 40 Percent SPH E Cigarette or Vaping Associated Lung Injury New England Journal of Medicine The impact of e cigarette exposure on different organ systems: A review of recent evidence and future perspectives ScienceDirect Health Effects Vaping Information, Solutions & Interventions Toolkit Stanford Medicine