It may actually be the case that electronic cigarettes serve as an inhibitor of smoking initiation by getting a youth used to a flavorful experience, thus making it less likely - not more likely - that the youth will move on to the harsh taste of tobacco. It is difficult enough to enjoy the initial experiences with tobacco cigarettes, but it would be expected to become that much less enjoyable if one has become accustomed to a flavored nicotine product like electronic cigarettes.

Instead, I think that studies which specifically compare lung cancer risk between lifelong smokers of filtered vs. non-filtered cigarettes during the same time period are most informative regarding the relative cancer risks of these products. And multiple studies along these lines, including recent studies, have reported a slightly decreased risk associated with lifetime smoking of filtered vs. non-filtered cigarettes.

This argument is fallacious, I believe, because there are many things that changed from one cohort to the next. The introduction of cigarette filters is only one such change. To assume that any observed changes in cancer risk from one cohort to the next must be attributable to one particular change - the filter - is not appropriate, in my view.

You know which camp I am in. So let's examine the argument being made by the other camp:

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