Why Youth Vape Smoking and Tobacco Use CDC Evidence update on the cancer risk of vaping e cigarettes: A systematic review Electronic cigarette Wikipedia PDF) Contextual influences on the role of evidence in e cigarette recommendations: a multi method analysis of international and national jurisdictions 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