JUUL E Cigarettes Harrison County Health Department Known Health Effects of E Cigarette Use Kansas Health Institute E cigarettes: May be healthier for your lungs but not your oral health: Shine DDS: Family Dentists 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. Public Health Consequences of E Cigarettes E Cigarettes: Perspectives, Regulation and Health Effects Nova Science Publishers