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. Electronic Cigarettes and Vaping: Factsheet Positive Choices Toxicological Effects of E Cigarettes on Cells, Animals, and Humans and Mechanisms of Toxicity Springer Nature Link Health Effects Vaping Information, Solutions & Interventions Toolkit Stanford Medicine Vaping Facts Tobacco Free Amarillo