Vaping vs. smoking: what are the risks? Pacific Life Re Lung cancer risks persist with e cigarette use after quitting tobacco smoking Vaping can cause cancer, say researchers but still isn't as damaging as smoking cigarettes. More than 5.5 million Britons currently use e cigarettes, which have long been viewed as a safer alternative Evidence update on the cancer risk of vaping e cigarettes: A systematic review Most E cigarette Users Ages 18 to 29 Never Smoked Before American Cancer Society