Abstract
Note from Fluoride Action Network:
This is a duplicate study of Lu et al. (2000).
SUMMARY:
Sixty children, aged 10 to 12, were randomly selected for IQ testing from
an area with high fluoride (3.15 mg F/L) in the drinking water along with 58 control
children of the same age from a nearby low fluoride (0.37 mg F/L) area. The two areas
are located approximately 5 km apart in the Tianjin Xiqing District, and both have
similar normal iodine levels, living standards, access to medical facilities, economic
development, educational level, etc. A single individual using the C2 version of the
Chinese Raven Test did the IQ testing. The mean IQ scores were significantly
different: 92.27±20.45 in the high F area and 103.05±13.86 in the low F area (P<0.01).
Within the seven categories of the scores, there were significantly more borderline
and low IQs in the high F area (13/60) than in the low F area (2/58) (p<0.01).]
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[Effects of fluoride and arsenic in drinking water on children's intelligence].
Objective: To study the effect of fluoride and arsenic exposure in drinking water on children’s intelligence ,and to provide scientific basis for children’s health protection. Methods: Two hundred and sixty-eight pupils in Hangjinhou Qi,Inner Mongolia were selected as subjects. Fluoride and arsenic in drinking water were determined. The Chinese combined Raven’s
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A cross-sectional study to assess the intelligence quotient (IQ) of school going children aged 10-12 years in villages of Mysore district, India with different fluoride levels.
Introduction: Besides dental and skeletal fluorosis, excessive fluoride intake can also affect the central nervous system without first causing the physical deformities associated with skeletal fluorosis. With the existence of widespread endemic fluorosis in India, the possible adverse effect of elevated fluoride in drinking water on the Intelligence Quotient (IQ)
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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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Association of lifetime exposure to fluoride and cognitive functions in Chinese children: A pilot study
Highlights Elevated fluoride concentrations in drinking water may be neurotoxic. We carried out a pilot study of 51 first-grade children with stable lifetime fluoride exposures. Moderate and severe fluorosis was associated with deficits in digit span total and backward scores. The dose-dependence underlying the association needs to be characterized in
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Dental fluorosis and urinary fluoride concentration as a reflection of fluoride exposure and its impact on IQ level and BMI of children of Laxmisagar, Simlapal Block of Bankura District, W.B., India
There has been growing public concern about intellectual performance of children at high levels of fluoride exposure. A cross-sectional study was conducted in Simlapal Block of Bankura District, West Bengal, to find out the relationship between fluoride (F) exposure as exposure dose (ED) with dental fluorosis (DF), urinary fluoride concentration
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NRC (2006): Fluoride's Neurotoxicity and Neurobehavioral Effects
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