E cigarettes: How safe are they? E cigarettes contain hazardous substances, addictive and harmful ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, Truth About E Cigarettes and Vaping: Are They Safer Than Smoking for Lung Cancer Risk? E cigarette flavorings shown to be harmful to the human lungs Heated Tobacco Products and E cigarettes What's the difference? Dailynewsegypt