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 Risks and Benefits of e Cigarette Usage Relative to Conventional Cigarettes Don't Go Up in Smoke: E Cigarette Safety Electrical Safety Foundation International 18.3 Prevalence of e cigarette use Tobacco in Australia