"Whether or not theyappeal to minors, the flavors that offend him who switch from smoking to vaping. In a conducted byE-Cigarette Forum last summer, three-quarters of adult vapersfavored flavor categories other than tobacco, including fruit (31percent), bakery/dessert (19 percent), and savory/spice (5percent). fromPalm Beach Vapors, a chain of 14 storesthat sell vaping equipment and liquids to adults only, confirm thatsupposedly juvenile flavors are popular with adults. Last fiscalyear, only two of the chain's top 19 sellers were tobacco flavors.They finished 18th and 19th, far below flavors such as strawberry,watermelon, and cinnamon."

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.

Similarly, the study found that 2.9% of the baseline nonsmokers had ever tried an electronic cigarette in the past year. It could have been that the respondent took a single puff on an electronic cigarette and never took another puff.

In other words, the blatant flaw in this study is that it enrolled smokers who had already made quit attempts using e-cigarettes in the past. By definition, this resulted in a sample of smokers who were more resistant to quitting. One would expect to find lower quitting rates among this population of e-cigarette users.

Even if e-cigarette vapor shows some toxicity in cell culture studies, how does that demonstrate that vaping is more harmful than smoking?

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