Abstract
Recently, many researchers and scholars have studies 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.
1.Methodology and Content
A We have chosen our tokens of research based on elements with similar types of natural conditions. Regions with different combinations of chemicals detected have been used in the research, such as high fluoride high iodine, high fluoride low iodine, high fluoride with regular amount of iodine, low fluoride high iodine, low fluoride with low iodine, low fluoride and normal amount of iodine, low iodine and regular amount of fluoride, as well as research groups where the elements and their combinations are compared against each other. The research group has performed intelligence tests on selected groups of subjects between the ages of 8 to 14 years old.
… B Results of IQ testing: the number of children whose level of intelligence is lower is significantly increased in regions of high fluoride/iodine, regions of high fluoride only, regions of high fluoride/low iodine, against their respective comparative groups. Little difference was detected in the results of high fluoride/iodine regions and regions where only a high amount of fluoride is detected. However, the results in these aforementioned regions in comparison against regions of high fluoride/low iodine are significantly different. This could be demonstrative of the fact that fluoride acts to increase its toxicity and worsen the occurrence of thyroid swellingl.
B We have chosen intelligence tests formulated by Bient-Siman.
C We have also performed a study on the parents of the subjects, and looked into whether these parents have a certain level of education or have provided pre-school education to their children.
… There is no difference in the results between a region of high fluoride and iodine, one that has only a high level of fluoride, a region of low fluoride and high iodine, a region with a lower amount of fluoride presence, and their respective comparative groups (P>0.05).
2.Results
1. The comparative results between regions with a high amount of fluoride are as follows: there is no difference between a region of high fluoride and iodine against one that only has a high level of fluoride (P>0.05); however there are major differences in results between a region of high fluoride and iodine, and one with a high level of fluoride and low iodine (P<0.01). For IQ levels within regions with a low amount of iodine, the results are as follows: there is no difference between a region of low fluoride and high iodine, and one that only has a low presence in fluoride (P>0.05); however there are major differences in results between a region of low iodine and fluoride, and one that only has a low level of iodine (P<0.01). As to comparisons between a region with low levels to comparisons between a region with low levels of iodine and fluoride against one that only has a low level of iodine, there is no difference in the results (P>0.05). There are, however, major differences in the results between a region of high fluoride and low iodine, one that has low fluoride and iodine, one that has only a low level of iodine, and their respective comparative groups (P<0.01).
Bibliography
[1] MA, Tai & Co.: Regional types of thyroid swelling and cretinism. The People’s Health Publishing House Beijing, 1981, 48.
[2] NIE, Ronghua & Co.: Several elements affecting the development of intelligence in children between 5-?7 years of age in regions with occurrence of thyroid swelling, goiter and other related diseases and healthy regions: a preliminary study. Chinese Journal of Endemiology, 1984, 3 (3): 161.
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Translated from Chinese into English by FoxTranslate, courtesy of the Fluoride Acton