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Hypothyroidism (also called underactive thyroid, low thyroid or hypothyreosis) is a disorder of the endocrine system in which the thyroid gland does not produce enough thyroid hormones. [3] It can cause a number of symptoms, such as poor ability to tolerate cold , extreme fatigue, muscle aches , constipation , slow heart rate , depression , and ...
Low levels of thyroid hormones can lead to symptoms including fatigue, weight gain, cold intolerance, dry, flakey skin, loss of hair and inability to concentrate.
The TSH, in turn, stimulates the thyroid to produce thyroid hormone until levels in the blood return to normal. Thyroid hormone exerts negative feedback control over the hypothalamus as well as anterior pituitary, thus controlling the release of both TRH from hypothalamus and TSH from anterior pituitary gland.
Certain medications can have the unintended side effect of affecting thyroid function. While some medications can lead to significant hypothyroidism or hyperthyroidism and those at risk will need to be carefully monitored, some medications may affect thyroid hormone lab tests without causing any symptoms or clinical changes, and may not require treatment.
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Right now, hormone testing is the talk of the internet.At-home hormone tests—which can run up to ...
The thyroid hormones act on nearly every cell in the body. It acts to increase the basal metabolic rate, affect protein synthesis, help regulate long bone growth (synergy with growth hormone) and neural maturation, and increase the body's sensitivity to catecholamines (such as adrenaline) by permissiveness. [12]
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.
Another hormone that is secreted by Para follicular cells of the thyroid gland is calcitonin. [2] Calcitonin works in an antagonistic fashion with parathyroid hormone (PTH): both regulate the level of calcium in the blood. [3] Blood calcium level is tightly regulated by these two hormones. The cells of our bone that is involved in bone ...
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