• Corpus ID: 32796022

Effect of fluoride in drinking water on children's intelligence

@inproceedings{Xiang2003EffectOF,
  title={Effect of fluoride in drinking water on children's intelligence},
  author={Quanyong Xiang and Y. J. Liang and L. Chen and C. Wang and B. Chen and X Chen and M. Zhou},
  year={2003}
}
SUMMARY: The Intelligence Quotient (IQ) was measured in 512 children, aged 8-13 years, living in two villages in Sihong County, Jiangsu Province, China, differing in the level of fluoride in their drinking water. In the high- fluoride village of Wamiao (water fluoride: 2.47±0.79 mg/L; range: 0.57-4.50 mg/L), the mean IQ of 222 children was significantly lower (92.02±13.00; range: 54-126) than in the low-fluoride village of Xinhuai (water fluoride: 0.36±0.15 mg/L; range: 0.18-0.76 mg/L), where… 

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Children residing in areas with higher than normal water fluoride levels demonstrated more impaired development of intelligence, suggesting that children’s intelligence may be affected by highWater fluoride levels.

ANALYSIS OF CHILDREN ’ S SERUM FLUORIDE LEVELS IN RELATION TO INTELLIGENCE SCORES IN A HIGH AND LOW FLUORIDE WATER VILLAGE IN CHINA

Analysis of the overall relationship between IQ scores and serum F levels indicates there may be no serum F level below which adverse effects on IQ might not be present.

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The data suggest that children exposed to either F or As have increased risks of reduced IQ scores, and a significant association was observed between As in urine and Full IQ scores.

A COMPARATIVE STUDY OF THE IQ OF CHILDREN AGE 7 – 9 IN A HIGH AND A LOW FLUORIDE WATER CITY IN IRAN

A study was conducted to evaluate the effect of high and low fluoride (F) in the drinking water on the Intelligence Quotient (IQ) of young schoolchildren in two otherwise similar high-altitude

Fluoride and thyroid function in children in two villages in China

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References

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Exposure of children to high levels of fluoride may carry the risk of impaired development of intelligence, and an inverse relationship was present between IQ and the urinary fluoride level.

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In Shanxi Province, China, children living in the endemic fluoride village of Sima had average IQ significantly lower than children living to the north in the nonendemic village of Xinghua, and these differences were not associated with gender, but the IQ scores were directly related to educational level of the parents.

EFFECT OF FLUORIDE EXPOSURE OM INTELLIGENCE IN CHILDREN

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The development of intelligence appeared to be adversely affected by fluoride in the areas with a medium or severe prevalence of fluorodis but to a minor extent only in areas with only a slight prevalence of fluoride.

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Excessive fluoride intake since early childhood would reduce mental work capacity (MWC) and hair zinc content and the effect on zinc metabolism was a mechanism of influence on MWC by excessive fluoride intake.

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Adding appropriate fluorine to drinking water for children under 11 years old in the area with moderate amount of fluorine should be suggested and the influence of high-fluorine is obvious on the growth of children.

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