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.

The black box warning for Chantix, which is required by the FDA to be placed on this smoking cessation drug made by Pfizer, notes the following:

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