E Cigarettes Increase Risk of Lung and Bladder Cancer More Than Traditional Cigarettes Oncology Nursing Society 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 Misconceptions about e cigarette safety might be stopping smokers using them to quit Most E cigarette Users Ages 18 to 29 Never Smoked Before American Cancer Society