Evidence update on e cigarette dependence: A systematic review and meta analysis ScienceDirect 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 National Health and Medical Research Council Statement on electronic cigarettes: 2022 Update. Medical Journal of Australia published by John Wiley & Sons Australia, Ltd on behalf of AMPCo Pty Ltd. New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking