How Do Electronic Cigarettes Work? UPMC HealthBeat E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA Surgeon General Calls E Cigarettes a "Major Health Concern" for Teens The Atlantic Comparison of Nicotine Levels Between Cigarettes and Vapes Ecigator From cigarettes to e cigarettes: The evolution of tobacco use in the United States 4 H Healthy Youth FACT: Most e cigarette users also smoke cigarettes, a pattern known as dual use. This means the tobacco industry isn't helping people quit; it's sustaining addiction through another product. While the industry claims