Should People Who Can't Quit Smoking Switch to E Cigarettes? Live Science E cigarette use to reduce cigarette smoking may not increase nicotine dependence Penn State Health News E cigarettes less addictive than cigarettes Penn State University Compare E Cigarette and Vape Starter Kits SMOKO E Cigarettes E Cigarettes May Be Independently Linked to Erectile Dysfunction, New Research Finds NYU Langone News