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).
The effect of fluorine on the level of intelligence in children.
Recently, many researchers and scholars have studied about the effects of the trace element, iodine, on the level of intelligence in children. However there has been little coverage or noise about the same effect of fluorine on children. For this purpose we have performed some research and the results are as follows.
Investigation and Analysis of Children’s IQ and Dental Fluorosis in a High Fluoride Area
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
DRAFT NTP Monograph on the Systematic Review of Fluoride Exposure and Neurodevelopmental and Cognitive Health Effects
This DRAFT Monograph is distributed solely for the purpose of pre-dissemination peer review and does not represent and should not be construed to represent any NTP determination or policy. Background: Previous reviews of epidemiological studies, including a 2006 evaluation by the National Research Council (NRC), found support for an association between
Comparative assessment of intelligence quotient among children living in high and low fluoride areas of Kutch, India: a pilot study
Background: Long-term ingestion of large amounts of fluoride can lead to potentially severe skeletal problems and neurological consequences. The study was conducted to assess and compare intelligence quotient of children living in high and low fluoride areas in Kutch, Gujarat, India. Methods: A cross-sectional descriptive survey was conducted among 100 school
Dopamine receptor D2 gene polymorphism, urine fluoride, and intelligence impairment of children in China: A school-based cross-sectional study.
Highlights Urine fluoride was inversely associated with IQ. DRD2 Taq 1A polymorphism was not related to IQ in children exposed to high fluoride. Urine fluoride had a stronger association with IQ in children with TT genotype. The threshold of urine fluoride affecting IQ in children with TT genotype existed. Objective:
Related Studies :
Fluoride & IQ: 67 Studies
As of May 2020, a total of 75 studies have investigated the relationship between fluoride and human intelligence. Of these investigations, 67 studies have found that elevated fluoride exposure is associated with reduced IQ in humans, while over 60 animal studies have found that fluoride exposure impairs the learning and/or
Fluoride Affects Learning & Memory in Animals
An association between elevated fluoride exposure and reduced intelligence has now been observed in 65 IQ studies. Although a link between fluoride and intelligence might initially seem surprising or random, it is actually consistent with a large body of animal research. This animal research includes the following 45 studies (out
Fluoride's Effect on Fetal Brain
The human placenta does not prevent the passage of fluoride from a pregnant mother's bloodstream to the fetus. As a result, a fetus can be harmed by fluoride ingested pregnancy. Based on research from China, the fetal brain is one of the organs susceptible to fluoride poisoning. As highlighted by the excerpts
Fluoride: Developmental Neurotoxicity.
Developmental Neurotoxicity There has been a tremendous amount of research done on the association of exposure to fluoride with developmental neurotoxicity. There are over 60 studies reporting reduced IQ in children and several on the impaired learning/memory in animals. And there are studies which link fluoride to Attention Deficit Hyperactivity Disorder. Teaching
NRC (2006): Fluoride's Neurotoxicity and Neurobehavioral Effects
The NRC's analysis on fluoride and the brain.
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