E cigarettes may harm DNA and cause cancer Science, Climate & Tech News Sky News E cigarettes found to cause change in mouth bacteria which could lead to gum disease or oral cancer 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 cigarette vapor linked to cancer in mice National Institutes of Health (NIH) E Cigarettes: Know the Health Risks Department of Health Similar DNA changes found in cells of both smokers and e cigarette users UCL News UCL University College London