Electronic cigarette Wikipedia Read "Public Health Consequences of E Cigarettes" at NAP.edu E Cigarette vs. Traditional Cigarette: Health Risks, Research Gaps, and Counseling Considerations E cigarette Characteristics, Safety Issues, & Regulation Britannica E cigarettes are not a healthier alternative to cigarettes. They contain nicotine and many harmful ingredients that can cause cancer and heart disease. Since these products are relatively new, we don't know all Electronic cigarettes (e cigarettes) are sometimes called e cigs, vapes, vape pens, and electronic nicotine delivery systems (ENDS). E cigarettes come in many shapes and sizes. Most e cigarettes contain nicotine. Get the facts about e cigarettes,