So not only are these researchers lying by making false extrapolations, they are lying even in the assumptions they are making prior to making those extrapolations. Worst of all, they are trying to make determinations of risk based on only one small slice of the total information that is necessary to judge the relative safety of electronic cigarettes compared to tobacco cigarettes.

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.

In summary, this study helps to alleviate concerns raised by prior research and does not raise any new concerns. While more research is clearly needed, especially because there are so many different brands of electronic cigarettes on the market, the current evidence does not point to any substantial health hazards associated with passive vaping.

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