Well, Polosa et al. have conducted exactly such a . They examined the changes in asthma symptoms among smokers who continue to smoke versus those who switch to electronic cigarettes. These investigators reported that in contrast to real cigarettes, the fake ones result in actual harm reversal. Lung function, asthma control, and asthma symptoms were significantly improved among patients who switched from regular cigarettes to electronic cigarettes. These improvements were even observed among patients who became dual users of both real and fake cigarettes.

To the best of my knowledge, this assertion is false. I do not believe that Mistic is a tobacco company. I believe that Mistic is an electronic cigarette company, and I do not believe that Mistic is owned by any tobacco company. Thus, I believe that this accusation is false.

• The only study to examine this question found that e-cigarettes are not a gateway to smoking.

Hopefully, the FDA will look towards a little higher level of scientific evidence and reasoning before it promulgates its final e-cigarette regulations.

If there were any evidence that electronic cigarettes inhibit, rather than enhance smoking cessation, I too would join Dr. Glantz's camp and oppose electronic cigarettes. But such evidence does not exist. Not a shred of it so far. Not a single study suggests that electronic cigarette use results in lower quit rates than what would occur in the absence of electronic cigarette use among smokers who try these products.

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