Sadly, the agency concluded that it is not sure that e-cigarettes are any safer than tobacco cigarettes. The FDA states: "Many consumers believe that e-cigarettes are "safe" tobacco products or are "safer" than cigarettes. FDA has not made such a determination and conclusive research is not available."

The main study finding was as follows: "The assessment of lung function demonstrated that neither a brief session of active e-cigarette smoking nor a 1 hour passive e-cigarette smoking session significantly interfered with normal lung function. On the other hand, acute active and passive tobacco cigarette smoking undermined lung function, as repeatedly shown in previous studies."

The impression I am left with is that the entire harm reduction debate is a toxic one, with venom on both sides, which is leading to irrational thinking, blind adherence to ideology, a focus on ad hominem attacks rather than rational scientific discourse, and a biased perspective on the scientific evidence.

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