- 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.
Higher fluoride concentrations in water have inconsistently been associated with the levels of intelligence in children. The following study summarizes the available evidence regarding the strength of association between fluoridated water and children’s intelligence.
PubMed, Embase, and Cochrane Library databases were systematically analyzed from November 2016. Observational studies that have reported on intelligence levels in relation to high and low water fluoride contents, with 95% confidence intervals (CIs) were included. Further, the results were pooled using inverse variance methods. The correlation between water fluoride concentration and intelligence level was assessed by a dose–response meta-analysis.
Twenty-six studies reporting data on 7258 children were included. The summary results indicated that high water fluoride exposure was associated with lower intelligence levels (standardized mean difference : ?0.52; 95% CI: ?0.62 to ?0.42; P < 0.001). The findings from subgroup analyses were consistent with those from overall analysis. The dose–response meta-analysis suggested a significant association between water fluoride dosage and intelligence (P < 0.001), while increased water fluoride exposure was associated with reduced intelligence levels.
Greater exposure to high levels of fluoride in water was significantly associated with reduced levels of intelligence in children. Therefore, water quality and exposure to fluoride in water should be controlled in areas with high fluoride levels in water.
*Original abstract online at https://www.sciencedirect.com/science/article/abs/pii/S0033350617302950?via%3Dihub
Outcome of Systemic Fluoride Effects on Developmental Neurocognitions and Psychopathology in Adolescent Children. (Letter).
To the Editor: The Centers for Disease Control recognized community water fluoridation as one of the 10 great public health achievements of the twentieth century for improving oral health, especially in children . Unfortunately, long-term exposure to higher endemic water fluoride caused dental fluorosis, skeletal fractures, cancers, and affected reproduction, thyroid
[Investigation of children’s intelligence quotient and dental fluorosis in drinking water-type of endemic fluorosis area in Pucheng county Shaanxi province before and after drinking water change].
Objective: To further understand the effect of anti—fluoride water on intellectual development of children and dental fluorosis in drinking water-type of endemic fluorosis area Pucheng county Shaanxi province. Methods: Two hundred 8 to 12 years old children were randomly selected in endemic fluorosis area with changed water or unchanged water, in
Is Fluoride Potentially Neurotoxic?
An Editorial by David C. Bellinger, PhD, MSc Environmental epidemiology is a field replete with controversies, but the intensity of the debate inspired by the fluoridation of municipal water supplies to reduce dental caries is perhaps unrivaled. Governments, as well as individuals, differ in their assessments of water fluoridation as public policy.
Effect of high-fluoride water supply on children’s intelligence.
In Shanxi Province, China, children living in the endemic fluoride village of Sima (water supply F = 4.12 mg/L) located near Xiaoyi City had average IQ (97.69) significantly lower (p < 0.02) than children living to the north in the nonendemic village of Xinghua (F = 0.91 mg/L; average IQ = 105.21). These differences were not
Effect of high water fluoride concentration on the intellectual development of children in Makoo/Iran.
OBJECTIVE: Prolonged excessive intake of fluoride during child's growth and development stages has been associated with mental and physical problems. The aim of this study was to investigate the effect of excessive fluoride intake on the intelligence quotient (IQ) of children living in five rural areas in Makoo/Iran. MATERIALS AND METHODS:
Related Studies :
Fluoride & IQ: 70 Studies
As of June 2021, a total of 78 studies have investigated the relationship between fluoride and human intelligence. Of these investigations, 70 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: 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.
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
Related FAN Content :