Most E cigarette Users Ages 18 to 29 Never Smoked Before American Cancer Society Irish Cancer Society position on e cigarettes Irish Cancer Current thinking about the effects of e cigarettes on oral cancer risk BDJ Team Vaping Facts Tobacco Free Amarillo E cigarettes 'DON'T cause cancer' UKVIA Comment UKVIA 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,