E cigarette users are exposed to potentially harmful levels of metal linked to DNA damage UCR News UC Riverside E cigarettes: 'cancer risk close to zero' The Mail & Guardian E Cigarettes May Damage DNA in Oral Cells Sable Industries Inc. Vaping and the use of e cigarettes are likely to cause cancer, according to a new study published by the University of New South Wales on 30 March. The study, which brought together New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking