e Cigarettes Safety Not Yet Proven CANSA The Cancer Association of South Africa CANSA The Cancer Association of South Africa 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 cigarettes may increase depression risk: Study Health effects and known pathology associated with the use of E cigarettes ScienceDirect How Do Cigarettes Cause Cancer? Memorial Sloan Kettering Cancer Center Cancer causing Chemical Formed in E cigarette Users School of Public Health University of Minnesota