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Levothyroxine is a synthetic form of thyroxine (T 4), which is secreted by the thyroid gland. Levothyroxine and thyroxine are chemically identical: natural thyroxine is also in the "levo" chiral form, the difference is only in terminological preference. T 4 is biosynthesized from tyrosine. Approximately 5% of the US population suffers from over ...
Newborn children with hypothyroidism may have normal birth weight and height (although the head may be larger than expected and the posterior fontanelle may be open). Some may have drowsiness, decreased muscle tone , poor weight gain, a hoarse-sounding cry, feeding difficulties, constipation, an enlarged tongue , umbilical hernia , dry skin , a ...
Thyroxine, also known as T 4, is a hormone produced by the thyroid gland.It is the primary form of thyroid hormone found in the blood and acts as a prohormone of the more active thyroid hormone, triiodothyronine (T 3). [1]
[73] [22] The use of iodised salt to add iodine to the diet [22] has eliminated endemic cretinism in most developed countries, [76] and over 120 countries have made the iodination of salt mandatory. [77] [78] Because the thyroid concentrates iodine, it also concentrates the various radioactive isotopes of iodine produced by nuclear fission.
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Congenital iodine deficiency syndrome (CIDS), also called cretinism, [2] is a medical condition present at birth marked by impaired physical and mental development, due to insufficient thyroid hormone production (hypothyroidism) often caused by insufficient dietary iodine during pregnancy.
The U.S. Food and Drug Administration on Monday set maximum levels for lead in baby foods like jarred fruits and vegetables, yogurts and dry cereal, part of an effort to cut young kids' exposure ...
First of all, it’s important to note that the Food and Drug Administration (FDA) does not review or approve dietary supplements for how safe or effective they may be (though brands are ...