3 Facts About E Cigarettes Everyone Should Know 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 Smoking and cancer Fresh Evidence that e cigarettes promote breast cancer Stanton Glantz blog A scientific review has raised fresh concerns about the long term cancer risks of vaping, concluding that e cigarettes are probably carcinogenic, while also acknowledging significant gaps in the evidence. The analysis of reviews