Abstract
The Chinese Binet IQ Test was used to investigate the IQs of 7–13 year- old children suffering from dental fluorosis, living and attending school in an area with coal burning-related fluoride poisoning. The average IQ of these children was found to be markedly lower than in the control area, and the number of children classified as having low intelligence was significantly higher. For both groups, IQ and serum fluoride show a negative correlation (r = –0.205).
Translated by Julian Brooke for the Fluoride Action Network and published with the concurrence of the Chinese Journal of Endemiology 1991;10(2):98-100 in the journal Fluoride.
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Investigation of intelligence quotient in 9-12-year-old children exposed to high- and low-drinking water fluoride in west Azerbaijan province, Iran
In order to investigate the relationship between fluoride (F) in drinking water and children’s intelligence quotient (IQ), 39 9–12-year-old children in West Azerbaijan, were selected and their IQ measured using the Iranian version of the RB Cattell test. The study cases were 19 children living in a high-drinking water F
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Early Life Exposure in Mexico to Environmental Toxicants (ELEMENT) Project.
PURPOSE: The Early Life Exposure in Mexico to ENvironmental Toxicants (ELEMENT) Project is a mother-child pregnancy and birth cohort originally initiated in the mid-1990s to explore: (1) whether enhanced mobilisation of lead from maternal bone stores during pregnancy poses a risk to fetal and subsequent offspring neurodevelopment; and (2) whether
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Controversy: The Evolving Science of Fluoride: When New Evidence Doesn't Conform With Existing Beliefs
Over the past 75 years, health authorities have declared that community water fluoridation -a practice that reaches over 400 million worldwide -is safe. Yet, studies conducted in North America examining the safety of fluoride exposure in pregnancy were nonexistent. When a Canadian study reported that higher fluoride exposure in pregnant
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Relationship between Drinking Water Fluoride and Intelligence Quotient in Egyptian School Children.
Background: Fluoridation of drinking water, despite being regarded as one of the top ten public health achievements of the twentieth century, has remained a much more debated concept. Excessive fluoride intake during infancy and early childhood causes a number of irreversible structural and functional changes in the CNS leading to
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Report on the intellectual ability of children living in high-fluoride water areas
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
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Fluoride: Developmental Neurotoxicity.
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