smoke and steam systems in comparison, normal cigarette, tobacco heater with sticks and e cigarette with liquid on a brown table, copy space, selected Stock Photo Alamy Story from Iowa Clinic: Vaping: A dangerous trend among teens Nearly 2 million U.S. adult nonsmokers vape e cigarette or smoking? Time to Establish This Electronic Cigarette Broschure Vaping Facts Tobacco Free Amarillo Most e cigarettes (vapes) contain nicotinethe addictive drug in regular cigarettes, cigars, and other tobacco products. Nicotine can harm the adolescent brain which continues developing until about