Health Effects of Cigarettes: Cancer Smoking and Tobacco Use CDC Lung cancer risks persist with e cigarette use after quitting tobacco smoking 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 Vaping harms your health Cancer Institute NSW Oral Cancer: Causes, Symptoms, & Treatment Vapes And E Cigs Cause Cancer In Their Own Right, Scientists Claim, And Society Shouldn't Wait 100 Years To Act IFLScience