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.

For example:

The rest of the story is that Glantz and colleagues are essentially calling for a ban on all existing electronic cigarettes. Why? Because every electronic cigarette contains flavors. In fact, the presence of flavors is the only distinguishing characteristic of different brands of e-liquids or cartridges.

An Unethical Experiment

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