Abstract of new IQ study from Iran
by Poureslami HR, fluoridealert.orgAn IQ study of children in communities with 2.38 ppm fluoride in their water vs. those with 0.41 ppm fluoride.
Aim: We investigated the effect of chronic high fluoride (F) exposure on children‘s intelligence.
Design: In this cross sectional study two urban communities with similar socio-economic and cultural status but with different levels of F in drinking water, in the Kerman province, were studied: Koohbanan city (F 2.38 mg/L), Baft city (F 0.41 mg/L). Study samples consisted of 119 children 6–9 years old: 59 children from Koohbanan and 60 children from Baft. The Raven‘s test used to determine the effect of F exposures on children‘s IQ.
Results: In the low F area (control group) the mean IQ score of children was 97.80 ± 15.95 that decreased to 91.37 ± 15.63 for the high F group (Koohbanan‘s children), which was significantly different from the control group (P < 0.05).
Conclusion: Based on the findings, the chronic exposure to high levels of F can be one of the factors that influence intellectual development.
| IQ Studies: See the 24 published studies reporting an association of reduced IQ with high fluoride exposure. The water fluoride levels in these studies range from 0.88 - 9.4 ppm. Brain Studies: • Fluoride is listed in EPA's Database of Developmental Neurotoxicants as a chemical "with Substantial Evidence of Developmental Neurotoxicity (n≈100)" |  |
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