Note from Fluoride Action Network:
This is a duplicate study of Lu et al. (2000).
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).]
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
Fluoride and its effect on human intelligence: a systematic review.
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The effects of comprehensive control measures on intelligence of school-age children in coal-burning-borne endemic fluorosis areas.
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Systematic Review of Fluoride Exposure and Neurodevelopmental and Cognitive Health Effects.
Background: People of all ages are exposed to fluoride from a variety of sources including dental products, drinking water, food, beverages and pharmaceuticals. In some developed countries, fluoride is added to municipal water systems to prevent tooth decay. Methods: The National Toxicology Program (NTP) conducted a systematic review of the human,
Fluoride exposure and intelligence in school-age children: evidence from different windows of exposure susceptibility.
BACKGROUND The intellectual loss induced by fluoride exposure has been extensively studied, but the association between fluoride exposure in different susceptibility windows and children’s intelligence is rarely reported. Hence, we conducted a cross-sectional study to explore the association between fluoride exposure in prenatal and childhood periods and intelligence quotient (IQ). Methods We recruited
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