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 Frequent vapers of non tobacco flavoured e cigarettes report mixed reactions to potential flavour restrictions Waterloo News University of Waterloo What's the Difference Between E Cigarettes and Vapes? Grow Strong KC E cigarettes didn't help smokers quit, study says CNN