Thus, the authors readily acknowledge that it is impossible from this study to determine whether or not e-cigarettes lead to smoking or whether smoking leads to e-cigarette experimentation.

The reference which supports this assertion is a by Dutra and Glantz which purports to provide data showing that electronic cigarettes are "aggravating the tobacco epidemic among youth."

When students take their final exam in my course, they are all experiencing acute effects on their respiratory tracts. In fact, if you were to measured their exhaled nitric oxide levels, you would find that there is a significant reduction, just as is observed with smoking.

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