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Study Claiming Fluoride Does Not Lower IQ is Flawed
by George Orwell's Ghost
Truthstream Media
NEW YORK, May 27, 2014 /PRNewswire-USNewswire/ — A recent New Zealand study published in the American Journal of Public Health, which claims to exonerate a link between fluoride and lowered IQ, is scientifically flawed and reveals blatant examiner bias, says the Fluoride Action Network (FAN).
The study’s co-author, pro-fluoridation activist and dentist Jonathan Broadbent, claimed: “Our findings will hopefully help to put another nail in the coffin of the complete canard that fluoridating water is somehow harmful to children’s development.” However, the limitations of Broadbent’s study mean it is inconclusive at best.
Paul Connett, PhD, FAN Executor Director says, “Even if this study was high quality science, which it is not, it could not cancel out over 100 animal and 45+ human studies showing fluoride can cause brain deficits. Broadbent’s research has serious weaknesses.”
For example:
1) The study’s small sample size of non-water-fluoridated subjects (99 compared to 891 water-fluoridated subjects) means it has low ability to detect an effect. Even worse, 139 subjects took fluoride tablets, but Broadbent does not say which. Since fluoride tablets are only recommended for children living in non-water-fluoridated areas, there may have been little difference in total fluoride intake between his comparison groups. Broadbent’s failure to consider total fluoride exposure may thus explain why he found “no effect”.
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Source: http://www.riseearth.com/2014/05/study-claiming-fluoride-does-not-lower.html
