1. There is absolutely no evidence to support it. Not a single study has shown that smoking cessation rates with electronic cigarettes are lower than what would have been expected in the absence of e-cigarettes. In fact, the overwhelming evidence from the existing clinical trials is that while modest in magnitude, electronic cigarettes do aid smoking cessation and compare favorably against the nicotine patch, which is currently the gold standard for smoking cessation.

Suppose that there are 1000 e-cigarette users who enter the cancer center with a diagnosis of cancer. Of these, an amazing 900 were able to quit smoking. However, 100 were very resistant smokers and could not quit smoking, even with e-cigarettes. Note that it would be these 100 resistant smokers who would be enrolled in the study. The 900 ex-smokers who quit using e-cigarettes would not be eligible for the study, because they no longer smoke.

In order to draw the conclusion that Dr. Glantz drew in his comment, one would have to completely ignore this study. Obviously, Dr. Glantz has done exactly that. He has based his comment on one narrow study and ignored the rest of the literature.

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