The CDC is even worse. It actually acknowledges the existence of these former smokers, but still argues that there is no evidence that electronic cigarettes have helped any smokers quit.

2. The subjects did not provide informed consent for their participation in the research.

This study provides data to support the hypothesis that among smokers who choose to quit using e-cigarettes or over-the-counter nicotine replacement products (and without behavioral support), the e-cigarettes produce about a two-fold increase in the quit rate.

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