From a public health perspective, the effectiveness of e-cigarettes for smoking cessation must be assessed by examining how effective the product is for smokers who are trying to quit. When you do that properly, this initial evidence suggests that you find out e-cigarettes are a viable smoking cessation aid for a subset of smokers.

Even if e-cigarette vapor shows some toxicity in cell culture studies, how does that demonstrate that vaping is more harmful than smoking?

In my view, there is only one possible explanation for this: Dr. Glantz is no longer playing by the rules of science. He is now a man on a mission: to destroy the e-cigarette industry and to remove e-cigarettes as an option for smokers trying to quit. He has apparently drawn the pre-determined conclusion that e-cigarettes are aggravating the tobacco epidemic among youth, and he will stop at nothing to draw this conclusion and disseminate it to the public.

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