Instead, these were all population-based studies of smoking and e-cigarette use that did not even ask smokers using e-cigarettes if they were using them regularly or if they were using them in an effort to quit smoking. Actually, one of the studies did ask smokers if they were using e-cigarettes to quit smoking and the overwhelming majority said that they were not. In other words, many of the smokers in this study were probably just experimenting with, or trying an e-cigarette, and were not regular users of these products.

Jacob Sullum provides an of the literature on this topic, pointing out that there is very strong data to demonstrate that the flavors are what attract many smokers to try to quit using electronic cigarettes. You have to read his whole column, but to summarize:

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