E Cigarettes, Vaping and Chew FAQ's Medical Clinic Marquette University Today's Fact Friday highlights an important truth. Both cigarettes and e cigarettes are harmful to your health. While some believe vaping is a safer alternative, studies show that one disposable vape can equal Australian researchers have issued one of the strongest warnings yet about vaping, saying a major review of evidence suggests e cigarettes are likely to cause lung and oral cancer. The review found signs E Cigarette Smoke Causes Lung Cancer in Mice NYU Langone News The Side Effects and Cancer Risk Associated with Vaping E cigarettes 'likely' to cause two different types of cancer due to 'tumour causing chemicals damaging DNA'