E Cigarettes and Vaping OHSU About E Cigarettes (Vapes) Smoking and Tobacco Use CDC 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 E Cigarettes & Vapor Smoke Safe? Not According to New Research Evidence update on the cancer risk of vaping e cigarettes: A systematic review