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).]
A Systems Approach to Remediating Human Exposure to Arsenic and Fluoride From Overexploited Aquifers.
Key Points Overexploiting aquifers increases energy costs and lowers economic productivity by increasing human exposure to geogenic neurotoxins Over a 100 year future time-frame estimated revenue from agro-export will be less than the costs this activity imposes on the population Investing in water treatment substantially lowers costs of deteriorating water quality In
Iodine Status Modifies the Association between Fluoride Exposure in Pregnancy and Preschool Boys’ Intelligence
In animal studies, the combination of in utero fluoride exposure and low iodine has greater negative effects on offspring learning and memory than either alone, but this has not been studied in children. We evaluated whether the maternal urinary iodine concentration (MUIC) modifies the association between maternal urinary fluoride (MUF)
Low-moderate fluoride exposure and intelligence among Chinese school-aged children: Role of circulating mtDNA content.
Highlights First epidemiologic study links mtDNA content with fluoride-caused lower IQ scores. MtDNA content was positively correlated to odds of having excellent intelligence. MtDNA content mediated relations of fluoride to reduced odds of excellent intelligence in girls. Mitochondrial DNA (mtDNA) content alterations are potential mediators of neuronal disorders. However, what
Using drawing tests to measure intelligence in children from areas impacted by combined Al-F endemic toxicosis (Shuicheng, Guizhou).
Measurements of intelligence via drawing tests have been conducted to examine the intelligence development of children from regions affected by combined AIF endemic toxicosis. A selected number of 196 children between 6.5 and 12 years of age participated in the testing. Across all age groups, the average IQ level of children from
Prenatal Fluoride Exposure and Cognitive Outcomes in Children at 4 and 6–12 Years of Age in Mexico
Background: Some evidence suggests that fluoride may be neurotoxic to children. Few of the epidemiologic studies have been longitudinal, had individual measures of fluoride exposure, addressed the impact of prenatal exposures or involved more than 100 participants. OBJECTIVE: Our aim was to estimate the association of prenatal exposure to fluoride with
Related Studies :
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 & IQ: 76 Studies
• As of July 18, 2022, a total of 85 human studies have investigated the relationship between fluoride and human intelligence. • Of these investigations, 76 studies have reported that elevated fluoride exposure is associated with reduced IQ in humans. • The studies which reported an association of reduced IQ with exposure
NRC (2006): Fluoride's Neurotoxicity and Neurobehavioral Effects
The NRC's analysis on fluoride and the brain.
Fluoride's Direct Effects on Brain: Animal Studies
The possibility that fluoride ingestion may impair intelligence and other indices of neurological function is supported by a vast body of animal research, including over 40 studies that have investigated fluoride's effects on brain quality in animals. As discussed by the National Research Council, the studies have consistently demonstrated that fluoride, at widely varying concentrations, is toxic to the brain.
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
Related FAN Content :