These results, while preliminary, provide initial evidence that electronic cigarettes may serve not only as a means of helping smokers to quit, but also of helping them to eventually become free of nicotine addiction.

In other words, despite acknowledging that they cannot tell from their study whether e-cigarette use precedes smoking or whether smoking precedes e-cigarette use, they nonetheless draw the conclusion that e-cigarette use precedes smoking.

To understand how ridiculous Dr. Glantz's extrapolation is, consider some of the other exposures that also cause reductions in exhaled nitric oxide:

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