Prevalence of cigarette and e cigarette use among U.S. adults eligible for lung cancer screening based on updated USPSTF guidelines ScienceDirect 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 Use of e cigarettes after quitting smoking increases lung cancer risk Cancerworld Magazine How Switching to E Cigarettes After Smoking Cessation Affects Lung Cancer Risk