Fluoride Action Network


The Chinese Binet IQ Test was used to investigate the IQs of 7–13 year- old children suffering from dental fluorosis, living and attending school in an area with coal burning-related fluoride poisoning. The average IQ of these children was found to be markedly lower than in the control area, and the number of children classified as having low intelligence was significantly higher. For both groups, IQ and serum fluoride show a negative correlation (r = –0.205).

Translated by Julian Brooke for the Fluoride Action Network and published with the concurrence of the Chinese Journal of Endemiology 1991;10(2):98-100 in the journal Fluoride.