PET imaging shows greater lung inflammation in e cigarette users than cigarette smokers The research looked at the chemical composition of "vape smoke" and assessed its cancer risk using data from published animal studies. Read more Broad evidence implicates e cigarettes as a cause of cancer Stanton Glantz blog Graphical review: The redox dark side of e cigarettes; exposure to oxidants and public health concerns ScienceDirect Similar DNA changes found in cells of both smokers and e cigarette users UCL News UCL University College London Lung cancer risks persist with e cigarette use after quitting tobacco smoking