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  2. Selenium - Wikipedia

    en.wikipedia.org/wiki/Selenium

    Selenium is a cofactor for the three thyroid hormone deiodinases, helping activate and then deactivate various thyroid hormones and their metabolites. Isolated selenium deficiency is now being investigated for its role in the induction of autoimmune reactions in the thyroid gland in Hashimoto's disease. [162]

  3. Selenium is an essential nutrient. But what exactly is it? - AOL

    www.aol.com/selenium-essential-nutrient-exactly...

    Selenium is a nutrient that is naturally present in many foods, added to others and is also available as a dietary supplement in pill, powder and liquid form, explains Perri Halperin, a ...

  4. Congenital iodine deficiency syndrome - Wikipedia

    en.wikipedia.org/wiki/Congenital_iodine...

    Iodine deficiency causes gradual enlargement of the thyroid gland, referred to as a goiter. Poor length growth is apparent as early as the first year of life. Adult stature without treatment ranges from 100 to 160 cm (3 ft 3 in to 5 ft 3 in), depending on severity, sex, and other genetic factors.

  5. Iodine in biology - Wikipedia

    en.wikipedia.org/wiki/Iodine_in_biology

    During the production of the thyroid hormones, hydrogen peroxide is produced in large quantities, and therefore high iodine in the absence of selenium can destroy the thyroid gland (often described as a sore throat feeling); the peroxides are neutralized through the production of glutathione from selenium. In turn, an excess of selenium ...

  6. Selenium deficiency - Wikipedia

    en.wikipedia.org/wiki/Selenium_deficiency

    Selenium deficiency occurs when an organism lacks the required levels of selenium, a critical nutrient in many species.Deficiency, although relatively rare in healthy well-nourished individuals, [1] can have significant negative results, [2] affecting the health of the heart and the nervous system; contributing to depression, anxiety, and dementia; and interfering with reproduction and gestation.

  7. Thyroid disease - Wikipedia

    en.wikipedia.org/wiki/Thyroid_disease

    Thyroid disease is a medical condition that affects the structure and/or function of the thyroid gland. The thyroid gland is located at the front of the neck and produces thyroid hormones [1] that travel through the blood to help regulate many other organs, meaning that it is an endocrine organ. These hormones normally act in the body to ...

  8. Selenium in biology - Wikipedia

    en.wikipedia.org/wiki/Selenium_in_biology

    Selenium is a component of the amino acids selenocysteine and selenomethionine. In humans, selenium is a trace element nutrient that functions as cofactor for glutathione peroxidases and certain forms of thioredoxin reductase. [1] Selenium-containing proteins are produced from inorganic selenium via the intermediacy of selenophosphate (PSeO 3 3 ...

  9. Deiodinase - Wikipedia

    en.wikipedia.org/wiki/Deiodinase

    Iodotyrosine deiodinase contributes to breakdown of thyroid hormones. It releases iodine , for renewed use, from iodinated tyrosines resulting from catabolism of iodothyronines. Iodotyrosine deiodinase employs a flavin mononucleotide cofactor and belongs to the NADH oxidase/flavin reductase superfamily.

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