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 Can Vaping Cause Cancer? Lung, Oral, and Bladder Carcinogenic and non carcinogenic health risk assessment of organic compounds and heavy metals in electronic cigarettes Scientific Reports Perception of E cigarette Harm Growing Among US Adults RT E Cigarettes at the Point of Sale Counter Tobacco