Abstract
From the survey by Kilpatrick et al. (p. 654, col. 1, Vol. 32) it was possible to classify 696 schoolgirls in 4 groups according to intake of I, which was higher in those taking school lunches than in those not doing so because iodised salt was used for cooking, and according to intake of F, in some areas 0.7 and in others <02 p.p.m. in drinking water. Enlargement of thyroid had been assessed on 3 bases, visibly enlarged, not visibly enlarged, but with lobes palpably enlarged, or enlarged at isthmus but not necessarily at lobes. There was no indication that F was goitrogenic; its addition to water was not precluded. D. Harvey.
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Fluoride exposure and thyroid function among adults living in Canada: Effect modification by iodine status.
Highlights Higher urinary fluoride levels are not associated with higher TSH levels in the general population of adults living in Canada. Iodine status modifies the relationship between urinary fluoride and TSH levels. Adults in Canada who have moderate-to-severe iodine deficiencies and higher urinary fluoride tend to have higher TSH
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Effects of fluoridated water on tissues of CSE female mice
Evidence suggests that certain tissues of the body are affected by inorganic fluoride in the diet. Groups of CSE female mice received different concentrations of fluoride in their drinking water for approximately 26 weeks. Slight variation in water and food intake was observed among the groups. Histological observation revealed pathological
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Correlation between drinking water fluoride and TSH hormone by ANNs and ANFIS.
Background: Artificial neural networks (ANNs) and adaptive neural-fuzzy Inference system (ANFIS) are the best solutions to finding the correlation between some water parameters and human hormones. The correlation between thyroid stimulating hormone (TSH) and drinking water fluoride studied by ANNS and ANFIS models in Yazd city. Method:
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[The change of thyroid functlon from the children with fluoride aluminum combined toxicosis in Shuicheng Area of Guizhou].
The levels of serum T3, T4 and TSH were analyzed in the children with fluoride aluminum combined toxicosis in Shuicheng area of Guizhou as compared with the children without fluoride-aluminum combined toxicosis. The results showed that serum T4 content decreased in the children with fluoride aluminum combined toxicosis (103.9±15.9 nmol/L
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[The fluorine content in water, soil and vegetal products of the Alma-Atinsk district areas and its role in the etiology of dental caries and endemic goiter].
No abstract available
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NRC (2006): Fluoride's Impact on the Thyroid Gland
Several lines of information indicate an effect of fluoride exposure on thyroid function. It is difficult to predict exactly what effects on thyroid function are likely at what concentration of fluoride exposure and under what circumstances.
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Fluoride's Impact on Thyroid Hormones
Up through the 1950s, doctors in Europe and South America prescribed fluoride for this purpose in patients with hyperthyroidism. (Merck Index 1968). Fluoride was selected as a thyroid suppressant based on findings dating back to the mid-19th century that fluoride is a goitrogen (a substance that can cause goiter). When used as
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Is fluoride-induced hyperthyroidism a cause of psychosis among East African immigrants to Scandinavia?
When people with a compensated fluoride-induced hypothyroidism move to a low-fluoride area, the fluoride-induced inhibition of the production of thyroid hormones ceases. In Scandinavia, the dietary intake of iodine is usually quite high due to iodized table salt and easy access to marine fish. Under these conditions, the elevated capacity for production of thyroid hormones may result in hyperthyroidism.
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Fluoride, Water Hardness, and Endemic Goitre
Variations in goitre prevalence were found to correlate closely with the fluoride content (p=0-74; P<0-01) and with the hardness (p=0.77; P<0-01) of the water in each village. The effects of fluoride and water hardness seem to be independent.
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Mikhailets (1996): Functional state of thyroid under extended exposure to fluorides
Abnormalities in the thyroid function characterized by a decreased iodine absorption function of the thyroid, a low level T3 syndrome, and a slight increase of the TSH level are observed in cases of chronic fluorine intoxication in the industrial workers.
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