The Marini study demonstrates that electronic cigarettes do lead to a reduction in exhaled nitric oxide, which suggests that they have a mild respiratory irritant effect and induce some inflammation in the airways. This is a finding which has been reported previously in a number of studies. It is not surprising because propylene glycol is known to be a mild respiratory irritant.

This is a complete disaster and is not in the interest of protecting the public's health. In fact, this provision is going to harm the public's health. It is going to require manufacturers to implicitly lie about the intended purpose and relative safety of their products.

The main difference between this study and those touted by Glantz as showing that e-cigarettes are ineffective is that unlike Glantz's cited studies, this one actually examines cessation rates among smokers who reported using e-cigarettes for smoking cessation. In other words, Brown et al. included smokers who reported having used e-cigarettes with the intention to quit smoking. In the studies cited by Glantz, smoking cessation rates for all e-cigarette users were examined, even if a smoker just tried a puff of an electronic cigarette to see what all the hype is about.

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