I read a science piece at one time along these lines: "there are no such things as toxic substances, only toxic levels." That is, many many things will kill you, and certain things will kill you faster. To that end, maybe it would be good if cig companies could reduce toxins. Not that I'm a smoker or fan of smoking, but I think the world would be without one more time-consuming debate if there were a cigarette that didn't kill you.
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