E cigarettes are likely to cause cancer, including in the lungs and mouth, according to a sweeping review of scientific evidence that challenges their positioning as a safer alternative to smoking. There is Evidence update on the cancer risk of vaping e cigarettes: A systematic review E Cigarettes and Associated Health Risks: An Update on Cancer Potential Does Vaping Doesn't Damage Your DNA? Prof. Peter Hajek Responds Ecigclick Lung cancer risks persist with e cigarette use after quitting tobacco smoking