Electronic cigarettes, on the other hand, have a clean and cool hit that is soft on the lungs and is designed to satisfy your nicotine cravings, not your cravings for smoke.

The finding of reduced exhaled nitric oxide is an indication that an exposure is causing some sort of inflammatory effect on cells lining the respiratory tract. It doesn't mean anything more or less than that. You can't take two exposures - each of which causes respiratory tract inflammation - and make the statement that the effects of both exposures are equal. Risk posed by an exposure depends on many other factors, including the degree of inflammation induced, the reversibility of the effect, the nature of the exposure, the chronicity of the exposure, etc.

The rest of the story is that the 2014 Surgeon General's report is violating the very ethical principles that it attacks the tobacco company for violating in the past. While there has been substantial progress in the past 50 years in the area of disclosure of conflicts of interest, somehow that progress has evaded the producers of the Surgeon General's report itself.

There is no excuse for collecting this important information, but not revealing it to the public. The only legitimate justification for this would be if there were no reported conflicts of interest. In such a case, the report could have included a statement indicating that none of the report's authors reported a conflict of interest.

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