E Cigarette effects on oral health: A molecular perspective ScienceDirect Electronic cigarettes (e cigarettes) are sometimes called e cigs, vapes, vape pens, and electronic nicotine delivery systems (ENDS). E cigarettes come in many shapes and sizes. Most e cigarettes contain nicotine. Get the facts about e cigarettes, Clearing the Air: The Harsh Reality of Vaping and Smokeless Products Leading to Cancer Comparing the cancer potencies of emissions from vapourised nicotine products including e cigarettes with those of tobacco smoke Tobacco Control