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 FDA outlines plan to regulate e cigarettes The Washington Post Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA We break down the key differences between traditional cigarettes and e cigarettescovering: 1 Their compositions and ingredients. 2 The health risks associated with both. 3 Nicotine levels and addiction potential. 4 The impact Fears vaping could cause Cancer Healthwatch Barnsley