"This should spell the end of water fluoridation worldwide. How can you possibly continue to expose millions of pregnant women and children to a known neurotoxic substance, now that you know there's a relationship between how much fluoride a woman is exposed to in pregnancy and the IQ of the children born to them?"
"… higher prenatal fluoride exposure, in the general range of exposures reported for other general population samples of pregnant women and nonpregnant adults, was associated with lower scores on tests of cognitive function in the offspring at age 4 and 6-12 y[ears]."
"This is the biggest moment for us since the Fluoride Action Network was formed in 2000. It vindicates the concerns we have had on fluoride's neurotoxicity since Mullenix's study on animal behavior in 1995 and the first two Chinese studies on IQ published in 1996."The mean level of fluoride in the urine of the mothers included in the study was 0.9 mg/L. In the U.S. 75 percent of the population's drinking water is fluoridated, and according to Hu, the levels of fluoride found in Mexican mothers is unlikely to be significantly different from those found in American women.
"The doses in this study are directly applicable to areas with artificial fluoridation. There is no need to extrapolate downward from effects at higher doses. The claims by fluoridation defenders that only studies using much higher doses than occur in areas with artificial fluoridation have shown a loss of IQ are squarely refuted by this study.
Those false claims range from 11 times to 30 times higher, but are based on the logical fallacy that it is the highest dose amongst several studies that is relevant, when it is the LOWEST dose amongst studies that is most relevant."
"Some of those studies had higher fluoride exposures than commonly found in the U.S., but many did not. The sole study in a country with artificial water fluoridation (as opposed to artificial salt fluoridation, which was likely a main source of fluoride in this new study) was by Broadbent in New Zealand.
That study found no association between water fluoridation and IQ and was trumpeted by fluoridation defenders. But that study was shown to have almost no difference in TOTAL fluoride intake between the children with fluoridated water and those with unfluoridated water, since most of the children drinking unfluoridated water were given fluoride supplements."Hu and his co-authors are cautious in their conclusions, and this is to be expected. But that does not detract from the fact that the implications of this study are enormous. No singular study can prove fluoride lowers IQ when consumed in doses found in fluoridated areas, but when you add it to previous studies, it's clearly raises a bright red flag.
"The smooth plot of the association between GCI [editor's note: IQ test at age 4] and maternal prenatal urinary fluoride from an adjusted GAM model [editor's note: a model that corrects for extraneous factors] suggested a linear relation over the exposure distribution (Figure 2)."
|Interfere with basic functions of nerve cells in the brain||Reduce nicotinic acetylcholine receptors||Reduce lipid content in the brain|
|Damage the pineal gland through fluoride accumulation||Impair antioxidant defense systems||Damage the hippocampus|
|Damage purkinje cells||Increase uptake of aluminum, which has neurotoxic effects||Encourage formation of beta-amyloid plaques (the classic brain abnormality in Alzheimer's disease)|
|Exacerbate lesions induced by iodine deficiency||Increase manganese absorption, which has also been linked lower IQ in children||Impair thyroid function, which can also affect brain development|