Dangers associated with e cigs Poison Control In recent years, the number of e cigarette users worldwide has sharply increased, with many believing that vaping is less harmful than smoking traditional cigarettes. However, health experts are warning of its negative Vaping: The new wave of nicotine addiction Cleveland Clinic Journal of Medicine Vaping may raise cancer and heart disease risk, study suggests Medical research The Guardian E cigarettes: 'cancer risk close to zero' Bhekisisa E cigarettes contain hazardous substances, addictive and harmful