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 E cigarette Characteristics, Safety Issues, & Regulation Britannica E Cigarettes and Vape Devices NH Department of Environmental Services E cigarettes pose threat to users' and bystanders' health Novant Health Healthy Headlines Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub