Note from Fluoride Action Network:
This is the same study that was published by the journal Journal of Dentistry and Oral Hygiene in 2011.
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 communities in a mountainous region of Kerman Province,
Iran. The study sample consisted of 120 boys and girls age 7–9: 60 in the city of
Koohbanan (pop. 12,253; elev. 2200 m) with 2.38 ppm F in the water and 60 in the city of
Baft (pop. 14,628; elev. 2300 m) with 0.41 ppm F in the water. Using a Persian version of
Raven’s Progressive Matrices Intelligence Test, the mean IQ scores of the children in low
F Baft was 97.80±15.95, and in high F Koohbanan it was significantly lower at 91.37±15.63
(p = 0.028).
Developmental fluoride neurotoxicity: a systematic review and meta-analysis
BACKGROUND: Although fluoride may cause neurotoxicity in animal models and acute fluoride poisoning causes neurotoxicity in adults, very little is known of its effects on children's neurodevelopment. OBJECTIVE: We performed a systematic review and meta-analysis of published studies to investigate the effects of increased fluoride exposure and delayed neurobehavioral development. METHODS: We
Intelligence quotient of 7 to 9 year-old children from an area with high fluoride in drinking water.
This paper reports the effect of chronic high fluoride exposure on children's intelligence quotient (IQ). In this cross sectional study, two urban communities with similar socio-economic and cultural status but with different levels of fluoride in drinking water, in Kerman province of Iran were studied: Koohbanan City (fluoride 2.38 mg/L),
Association between water fluoride and the level of children's intelligence: a dose–response meta-analysis
Highlights High fluoride content in drinking water could affect the intellectual development of children. High water fluoride exposure is significantly associated with a reduced level of intelligence. Water quality and water fluoride exposure should be improved in areas with high water fluoride content. Objectives: Higher fluoride concentrations in water have inconsistently
Using the Raven’s standard progressive matrices to determine the effects of the level of fluoride in drinking water on the intellectual ability of school-age children
Children, aged 9–10½, from 22 villages in Jing County, Hubei Province, China, with different levels of fluoride in the drinking water were tested for their IQs according to the revised version of Raven’s Standard Progressive Matrices. Among 141 children in villages with 2.1–4.0 ppm F in the drinking water, 34
The effects of endemic fluoride poisoning caused by coal burning on the physical development and intelligence of children.
Goal: To investigate the effects of endemic fluoride poisoning caused by coal burning on the physical development and intellectual ability of children. Method: Using random sampling from the relevant population, 176 fluorosis sufferers aged 7–12 (the subjects) were drawn from a heavily fluoride poisoned area of Zhijin County, with 50 children without dental
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