Electronic Cigarettes and Vaping: Factsheet Positive Choices How tobacco* impacts your health Mass.gov Does vaping (using e cigarettes) make a difference to our health and are there harms with second hand vaping? iHealth Facts 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. Health Effects Vaping Information, Solutions & Interventions Toolkit Stanford Medicine Psychiatry.org E Cigarettes and Vaping