1. Medscape - where the original interview with Dr. Frieden appears

So the key argument against electronic cigarettes is that for every person who they help by getting them off of cigarettes, there is another person who they prevent from getting off cigarettes.

the current e-cigarettes on the market operate with ‘no tobacco, smoke, or combustion’ [3]. Furthermore, although traces of tobacco-specific nitrosamines (TSNAs) have been found in some e-cigarettes, similar traces of TSNAs are present in licensed NRTs [4–7]. This mislabelling is exacerbated by national and international regulations including e-cigarettes in their tobacco regulations or proposing to do so."

The introduction and proliferation of filtered cigarettes occurred mostly in the decades preceding and following the 1964 Surgeon General's report and was mostly complete by 1974. Further reductions in tar yield occurred through other mechanisms, as by 1974, most cigarette brands were filtered.

Question: Of these five studies, how many examined the rate of smoking cessation among smokers who were trying to quit using electronic cigarettes?

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