• The truth is that the study only measured ever use of electronic cigarettes, not current use, regular use, or addiction to nicotine. Thus, it could not determine whether the kids who had tried electronic cigarettes ever used them again. So it could not tell if these kids were addicted to nicotine. They may have simply tried an electronic cigarette and not vaped again.

However, the anti-smoking groups did not buy this argument. One organization's spokesperson told me: "The conflict of interest form clearly asks for the disclosure of all financial relationships that could be perceived as biasing an author's opinion, and there is no 36-month limit for such disclosures. Section 5 of the form refers to any and all conflicts of interest, regardless of when they occurred. These researchers are breaking not only the spirit, but also the letter of these policies."

But the truth is more nuanced. While there is no question that low-tar or "light" cigarettes are not safer, it is not the case that the introduction of filters made cigarettes more carcinogenic. I would not be able to testify in a courtroom that I believe filtered cigarettes are more dangerous than non-filtered cigarettes. Nor would I be able to testify that filtered cigarettes and non-filtered cigarettes pose equivalent cancer risk.

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