In fact, the bulk of the evidence suggests that the introduction of the cigarette filter, while obviously not making cigarettes substantially safer, did result in small but measurable declines in cancer risk. These declines occurred due to a tremendous reduction in tar yield, from levels as high as 40-50 mg down to less than 20 mg. The evidence suggests that further declines - to levels below this massive initial drop - were not associated with further declines in cancer risk.

In fact, there are literally thousands of testimonials from ex-smokers as well as thousands of identified ex-smokers in surveys who testify that for them, e-cigarettes did work as a cessation aid. There is no legitimate scientific debate over whether e-cigarettes can work as a cessation aid. They can work, and they have worked for literally thousands of smokers.

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