Abstract
Objective: To understand the relationship of dental fluorosis and IQ among children in a high fluoride area and further study the harm of high fluoride to the human body.
Method: High fluoride areas (from drinking water) in Qi County were selected as the site of investigation. The subjects of the study were 7-to-10-year-old children. Dental fluorosis was diagnosed using the Dean Index, and IQ was determined with the Chinese combined Raven’s test.
Results: The average IQ among the children in the high fluoride area was 98.06 and the rate of mental retardation was 5.47%. Intelligence distribution in the children with and without dental fluorosis did not show any difference, and no sex-specific differences in intelligence were found.
Conclusions: The long-term consumption of high fluoride water may adversely affect children’s intelligence.
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Refinement Impairments of Verbal-Performance Intelligent Quotient in Children Exposed to Fluoride Produced by Coal Burning.
To explore the relationship between total intelligence quotient (IQ), verbal intelligence quotient (VIQ), performance intelligence quotient (PIQ), and fluoride exposure in children aged 8–12 years in coal-burning fluorosis area of Dafang County, Guizhou Province, China. The Wechsler Intelligence Scale for Children Revised in China (WISC-CR) was used to test the total
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Study on the correlation between daily total fluoride intake and children’s intelligence quotient.
Objective: To explore the exact relationship between daily total intake of fluoride and children's intelligence quotient (IQ). Methods: Wamiao village (severely endemic fluorosis area, drinking water fluoirde was 0.57-4.50 mgL) and Hinhuai village (non-endemic fluorosis area, drinking water fluoride was 0.18-0.76 mgL-1) in Shong County, Jiangsu Province, were selected for this
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The effect of high fluoride exposure on the level of intelligence in children.
Objective: Investigate the effect of high fluoride exposure on the level of intelligence in children. Method: In May 2006, 42 children from a high endemic fluorosis group and 37 children from the control area (who have been consuming low-fluoride water after water improvement schemes) were chosen for the test. They are all
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A comparative analysis of the results of multiple tests in patients with chronic industrial fluorosis
For this paper, X-rays, intelligence testing, fingernail fluorine content testing, electroencephalographs, and tests of nervous system symptoms and signs were performed on patients with chronic industrial fluorosis, as well as on workers who had worked in the same environment for shorter periods of time and were not diagnosed with industrial
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The effects of high levels of fluoride and iodine on intellectual ability and the metabolism of fluoride and iodine.
The authors carried out a study on the intellectual abilities and fluoride/iodine metabolism of children living in a high fluoride-high iodine area. Among the results: the percentage of the general population living in this fluoride/iodine-contaminated region that suffered from goiter (clinical thyroid enlargement) was 3.8%, the rate of children already showing some thyroid
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Fluoride Affects Learning & Memory in Animals
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Fluoride's Direct Effects on Brain: Animal Studies
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