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.
-
-
A systematic analysis on possibility of water fluoridation causing hypothyroidism.
Background: Community water fluoridation is widely used worldwide and its role in preventive dental health care is well established. However, there is sufficient evidence of the ill effects of excessive fluoride content in water, causing skeletal and dental fluorosis. Alongside, there was also extraskeletal and dental manifestations of excessive fluorides
-
Clinical and biochemical profile of deiodinase enzymes and thyroid function hormones in patients of fluorosis
The thyroid involvement is very significant feature of fluorosis due to fluoride accumulation in soft tissues. The participation of long term consumption of fluoride in drinking water on thyroid hormone status and deiodinating enzymes in fluorotic patients selected randomly from various parts of fluoride endemic areas, was elucidated. Type I
-
Association of maternal urinary fluoride concentrations during pregnancy with size at birth and the potential mediation effect by maternal thyroid hormones: The Swedish NICE birth cohort.
Highlights Gestational fluoride exposure was associated with increased infant size at birth. Fluoride exposure was linked with increased odds of large for gestational age. Maternal thyroid hormone levels did not explain the observed associations. Background Observational studies have indicated that elevated maternal fluoride exposure during pregnancy may impair child neurodevelopment but
-
Chronic fluorosis: the disease and its anaesthetic implications..
Abstract Chronic fluorosis is a widespread disease-related to the ingestion of high levels of fluoride through water and food. Prolonged ingestion of fluoride adversely affects the teeth, bones and other organs and alters their anatomy and physiology. Fluoride excess is a risk factor in cardiovascular disease and other major diseases, including
-
Impact of subchronic exposure to triclosan and/or fluoride on estrogenic activity in immature female rats: The expression pattern of calbindin-D9k and estrogen receptor a genes.
This study explored the influence of triclosan (TCS) in the absence and presence of sodium fluoride (NaF) on estrogenic activity and thyroid function of adolescent female rats. The results indicated that the individual exposure to TCS evoked a significant decline in T3 and T4 but the levels of estradiol, FSH,
Related Studies :
-
-
-
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.
-
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.
-
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
-
The Relationship Between Fluoride Exposure & Goitre in South Africa
As a general rule simple goitre, irrespective of the cause, can be very, or fairly, satisfactorily combated by an adequate increase in man's daily iodine intake, except when the enlargement of the gland is due to the ingestion of excessive amounts of fluorine. The only correct solution to fluorine-induced endemic goitre is the removal of this element from the drinking water.
-
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.
Related FAN Content :
-