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 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 E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA