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Fluoride, water hardness, and endemic goitre.
The prevalence of goitre in 17 Himalayan villages has been estimated. Water-samples from each village were taken, and levels of iodine, fluoride, and hardness determined. In 13 villages wide variations in goitre prevalence were not attributable to differences in iodine intake, which remained constant within a narrow range. Instead, variations
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[Effects of fluoride on thyroid structure in chicks].
Objective: To investigate the effects of fluoride on thyroid structure in chicks. Methods: 250 one day chicks were randomly divided into 5 groups, 50 for each. Group I was the control, and other four groups, group II, III, IV, V were fed the diets containing 500, 1,000, 1,500, 2,000 mg/kg of
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Fluorine and the Thyroid Gland: A Review of the Literature.
The increasing use of fluoride for prevention of dental caries poses the problem as to whether this halogen has antagonistic properties towards iodine, whereby it could hamper the success of iodine prophylaxis of endemic goitre. Review of the literature shows that some authors have found an inhibition by fluoride of
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Goitre in school girls of the Mewat area of Haryana
A survey was carried out on 5449 school girls aged 10-16 years in the Mewat area of Haryana for goitre. The overall prevalence of goitre was nearly 29.5%. Thus goitre was a public health problem in the region. Analysis of the water sources in the study population used for drinking
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Fluorosis and iodine deficiency disorders in India.
This review focuses on fluorosis and iodine deficiency disorders, two serious, highly prevalent metabolic disorders that are under-reported. These are caused by the two elements of the halogen family, fluorine and iodine. The former in excess and the latter in deficiency are the cause for concern. Excess fluoride (F–) consumption
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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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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.
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Fluorine in the Aetiology of Endemic Goitre
The distribution of endemic goitre in the Punjab and in England is related to the geological distribution of fluorine and to the distribution of human dental fluorosis (mottled enamel). Inquiry showed the presence of dental fluorosis among school-children in two areas of Somerset where two previous observers had recorded a high incidence of goitre, and the absence of dental fluorosis in an adjoining area selected as control where endemic goitre was absent.
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Fluoride & Goiter
Goitre (aka goiter) is an enlargement of the thyroid gland that in some cases can produce visible swelling in the neck. The main cause of goitre is iodine deficiency. Goitre can also be caused by other things, including hypothyroidism and substances that cause goitre (goitrogens). Since as far back as the
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Fluoride Exposure Aggravates the Impact of Iodine Deficiency
A consistent body of animal and human research shows that fluoride exposure worsens the impact of an iodine deficiency. Iodine is the basic building block of the T3 and T4 hormones and thus an adequate iodine intake is essential for the proper functioning of the thyroid gland. When iodine intake is inadequate during infancy and
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