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 How have e cigarettes changed over time? Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub Vape Vs E Cigarette E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) E cigarettes pose threat to users' and bystanders' health Novant Health Healthy Headlines