In fact, in a by Flouris et al., the investigators found that real cigarettes, but not the fake ones, had a significant detrimental effect on pulmonary function, measured by spirometry. This study documents that while active smoking has immediate, clinically meaningful effects in reducing lung function, electronic cigarettes do not.

To illustrate this, let's consider the five studies which the authors cite as providing evidence that electronic cigarettes inhibit smoking cessation.

The commentaries by the two former tobacco industry consultants, university professors at a major midwestern medical school, are not in any way pro-tobacco, although they do criticize a number of current anti-smoking initiatives because they are ineffective and not based on sound formative research.

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