Most E cigarette Users Ages 18 to 29 Never Smoked Before American Cancer Society The Sooner Smokers Quit Smoking the More Their Cancer Risk is Reduced. What About Vaping? Vaping Post Irish Cancer Society position on e cigarettes Irish Cancer E cigarettes 'DON'T cause cancer' UKVIA Comment UKVIA Young adult cancer survivors more likely than peers to use e cigarettes 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,