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. Johns Hopkins Medicine Team Proposes Ways to Regulate and Better Manage E Cigarette Use Johns Hopkins Medicine Let's Talk about VAPING for Children and Teens! Jacques Memorial School The Dangerous Truth Behind E Cigarettes Advanced DDS Known Health Effects of E Cigarette Use Kansas Health Institute E Cigarettes: Perspectives, Regulation and Health Effects Nova Science Publishers