Vapes VS. Cigarettes, Which One Is Safer? New strong evidence that Juul is more toxic to lungs and hearts than earlier e cigs Stanton Glantz blog E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA Adults worry about kids using e cigarettes National Poll on Children's Health Vaping refers to the act of inhaling and exhaling aerosol, often called vapor, produced by an electronic cigarette or similar device. These devices heat a liquid that usually contains nicotine, flavorings, and