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  2. Hyperparathyroidism - Wikipedia

    en.wikipedia.org/wiki/Hyperparathyroidism

    Hyperparathyroidism is an increase in parathyroid hormone (PTH) levels in the blood. [1][4] This occurs from a disorder either within the parathyroid glands (primary hyperparathyroidism) or as response to external stimuli (secondary hyperparathyroidism). [1] Symptoms of hyperparathyroidism are caused by inappropriately normal or elevated blood ...

  3. Parathyroid hormone - Wikipedia

    en.wikipedia.org/wiki/Parathyroid_hormone

    The differently colored narrow arrows indicate where the specified hormones act, and their effects (“+” means stimulates; “-“ means inhibits) when their plasma levels are high. PTH is parathyroid hormone, 1,25 OH VIT D 3 is calcitriol or 1,25 dihydroxyvitamin D 3, and calcitonin is a hormone secreted by the thyroid gland when the plasma ...

  4. Tertiary hyperparathyroidism - Wikipedia

    en.wikipedia.org/wiki/Tertiary_hyperparathyroidism

    Surgery, intravenous normal saline. Frequency. ~2 per 1,000. Tertiary hyperparathyroidism is a condition involving the overproduction of the hormone, parathyroid hormone, produced by the parathyroid glands. [1] The parathyroid glands are involved in monitoring and regulating blood calcium levels and respond by either producing or ceasing to ...

  5. What are normal testosterone levels by age? - AOL

    www.aol.com/news/normal-testosterone-levels-age...

    The researchers also broke the data down into normal levels of free testosterone and bioavailable testosterone. ... Just like it can be too low, your testosterone can also be too high, and that's ...

  6. Parathyroid gland - Wikipedia

    en.wikipedia.org/wiki/Parathyroid_gland

    Parathyroid glands are small endocrine glands in the neck of humans and other tetrapods. Humans usually have four parathyroid glands, located on the back of the thyroid gland in variable locations. The parathyroid gland produces and secretes parathyroid hormone in response to low blood calcium, which plays a key role in regulating the amount of ...

  7. Primary hyperparathyroidism - Wikipedia

    en.wikipedia.org/wiki/Primary_hyperparathyroidism

    Serum calcium levels are usually elevated, and the parathyroid hormone level is abnormally high compared with an expected low level in response to the high calcium. A relatively elevated parathyroid hormone has been estimated to have a sensitivity of 60–80% and a specificity of approximately 90% for primary hyperparathyroidism. [9]

  8. What Free Testosterone Is, and Why it Matters - AOL

    www.aol.com/free-testosterone-why-matters...

    But when considering calculated free testosterone, luteinizing hormones, and sex hormone-binding globulin levels, up to 20.2 percent of men would qualify as having subsets of the condition, like ...

  9. Secondary hyperparathyroidism - Wikipedia

    en.wikipedia.org/wiki/Secondary_hyperparathyroidism

    Thyroid and parathyroid. Secondary hyperparathyroidism is the medical condition of excessive secretion of parathyroid hormone (PTH) by the parathyroid glands in response to hypocalcemia (low blood calcium levels), with resultant hyperplasia of these glands. This disorder is primarily seen in patients with chronic kidney failure.