Prevalence of cigarette and e cigarette use among U.S. adults eligible for lung cancer screening based on updated USPSTF guidelines ScienceDirect 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 e Cigarettes Safety Not Yet Proven CANSA The Cancer Association of South Africa CANSA The Cancer Association of South Africa Rethinking Vaping E Cigarettes and Breast Cancer: Is Vaping Really Safer? How does smoking cause cancer? Cancer Research UK