Prospective studies related to e cigarette use and smoking cessation. Download Table Latest Cochrane Review finds high certainty evidence that nicotine e cigarettes are more effective than traditional nicotine replacement therapy (NRT) in helping people quit smoking Cochrane E Cigarettes and Vape Pens Tobacco Prevention Toolkit Stanford Medicine E cigarettes linked with blood vessel damage National Institutes of Health (NIH) CoEHAR Study: Most Peer Reviewed Vape Studies Are Methodologically Flawed Vaping Post E cigarette research concludes devices are bad for young people, but may be helpful for smokers