E cigarettes or Vapes to Quit Smoking Haleon HealthPartner How many US adult smokers have quit with e cigarettes? The CDC's National Health Interview Survey shows 4.8 million adults vape nicotine and have quit smoking completely. This number does not Charles An often made claim that e cigarettes are '95% safer' is not valid VCU News Virginia Commonwealth University Study Reveals E Cigarette Users Smoke Less and Increase Quit Attempts Vaping: The Facts Health Improvement Commission Research so far shows that legal e cigarettes are far less harmful than smoking, and can be an effective way of helping people who smoke to quit. However, there isn't enough research yet