Johns Hopkins Medicine Team Proposes Ways to Regulate and Better Manage E Cigarette Use Johns Hopkins Medicine Before you take another puff, know what's inside. E cigarettes contain thousands of toxic chemicals. Ready to quit smoking? Text READY to 34191 Vaping puts health at risk. Nicotine in e cigarettes is highly addictive. In Hawaii, vaping is addicting a new generation of youth to nicotine. While often marketed as healthier alternatives to cigarettes, e cigarettes, also known as vapes and electronic smoking devices, are not healthy