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 E Cigarettes and Associated Health Risks: An Update on Cancer Potential Switching to E Cigarettes Did not Prevent His Lung Cancer Death The Dangerous Truth Behind E Cigarettes Advanced DDS E cigarettes: 'cancer risk close to zero' Bhekisisa Truth About E Cigarettes and Vaping: Are They Safer Than Smoking for Lung Cancer Risk?