JamesReeves
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1. You cannot show one study that any substance, whatsoever, "is safe in any concentration for all of the public."  If you desire such absurd guarantees, you need to move to another planet..... as none exist on this one.
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2. Please provide valid, peer-reviewed scientific evidence of any "fluoride allergy", or adverse effect of optimal level fluoride on "infants, children, pregnant women, those with weak kidney problems, the elderly, etc."

It is the responsibility of no one to disprove the  unsubstantiated claims of antifluoridationists.
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3.  Fluoridation  is based on the most current, up-to-date science available.  This is precisely the reason why other fluoride proponents and I so easily dismantled the misinformation constantly put forth by you and all other unscrupulous antifluoridationists.
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Antifluoridationists are the ones who rely on discredited 50 year old studies, and quotes from  such as the 1936 President of the Am. Medical Assoc.
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Steven D. Slott, DDS