Abstract
Wechsler Intelligence Test IQ scores of 160 children, 8–14 years old, from nine schools in an area of high fluoride and low iodine averaged 64.8 compared with 85.0 (p<0.01) for 169 children of the same ages from seven schools in an area with low iodine only. Among the first group 65 (40.6%) had IQs below 60, but only 23 (13.6%) among the second group had scores this low. In each group the IQs of the boys and girls did not differ significantly. Clearly, exposure to the combination of high fluoride and low iodine was more deleterious than to low iodine alone.
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Research on the effects of fluoride on child intellectual development under different environments
Goal: To study the effects of the fluoride and iodine content of drinking water on child intellectual development and the interaction between the two factors and also the relationship of educational factors to such development. Methods: The subjects of the investigation were 8- to 14-year-old children randomly selected from endemic areas as well
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The effect of high levels of arsenic and fluoride on the development of children’s intelligence.
In the fields of toxicology, histology, physiology and biochemistry, numerous research and reports have already been conducted on the poisonous effect of arsenic poisoning, fluoride poisoning, as well as the combined effect of arsenic and fluoride poisoning. Progress has been made likewise in relevant medical treatment, clinical diagnosis and water clean-up prevention
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Blood lead of children in Wamiao-Xinhuai intelligence study (Letter).
As an additional part of our investigation of an association between fluoride in drinking water and children’s intelligence in two villages of Sihong County, Jiangsu Province, China, we have now determined blood lead levels of children in that study. Blood samples (80 ?L) were collected on June 18 and 19, 2003
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Research on the effects of fluoride on child intellectual development under different environmental conditions.
Goal: To study the effects of the fluoride and iodine content of drinking water on child intellectual development and the interaction between the two factors and also the relationship of educational factors to such development. Methods: The subjects of the investigation were 8- to 14-year-old children randomly selected from endemic areas as well
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The effect of fluorine on the level of intelligence in children.
Recently, many researchers and scholars have studied about the effects of the trace element, iodine, on the level of intelligence in children. However there has been little coverage or noise about the same effect of fluorine on children. For this purpose we have performed some research and the results are as follows.
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Fluoride Affects Learning & Memory in Animals
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Fluoride & IQ: 74 Studies
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Fluorine in the Aetiology of Endemic Goitre
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Fluoride, Water Hardness, and Endemic Goitre
Variations in goitre prevalence were found to correlate closely with the fluoride content (p=0-74; P<0-01) and with the hardness (p=0.77; P<0-01) of the water in each village. The effects of fluoride and water hardness seem to be independent.
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The Relationship Between Fluoride Exposure & Goitre in South Africa
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