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 E Cigs Are Still Flooding the US, Addicting Teens With Higher Nicotine Doses KFF Health News Illicit Vapes and E Cigarettes Flood Stores as F.D.A. Struggles to Combat Imports The New York Times E Cigarette Vapor Linked to Lung Cancer in Mice Respiratory Therapy What's a cigalike? Juice? Everything you need to know about vaping