While the attacks were mostly personal, and not worthy of expounding here, the shred of substance was that more recent studies which compared lung cancer risks of successive cohorts of smokers have found increased risk among more recent cohorts. From these studies, the Surgeon General's report - and these co-authors - conclude that filters must convey an increased risk of cancer.

The effects of such a regulation would be to force thousands of ex-smokers back to cigarette smoking. It would also result in thousands of dual users who have substantially cut down on their smoking to return to their pre-vaping cigarette consumption levels. Of course, the net effect of such a policy would be to substantially harm the public's health.

While many of these restrictions are reasonable, the final restriction mentioned - the prohibition on electronic cigarette companies claiming that these products are safer than tobacco cigarettes - is both inappropriate and devastating to the public health interest.

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