The CDC's statement is wrong on its face. If there is reputable evidence from former smokers that e-cigarettes helped them quit smoking, then there is indeed conclusive scientific evidence that e-cigarettes "can work" as a cessation aid.

• I also lied to you when I told you that my own study demonstrated that electronic cigarettes are "a new route to smoking addiction for adolescents." The study was a cross-sectional one, so I could not draw that conclusion. And I admitted it in the article itself. But that's not what I told you.

Here, they find a correlation between e-cigarette use and higher and more sustained levels of smoking. But because this is a cross-sectional study, they cannot determine which came first. In other words, what is the direction of the causal relationship? Does the e-cigarette use precede, and cause, the smoking? Or does the smoking precede, and cause, the e-cigarette use?

In law, there is a term used to refer to what Glantz and Chapman are doing here. It is called defamation.

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