What Is Secondary Hyperparathyroidism?
Secondary hyperparathyroidism is a parathyroid disorder resulting from hypocalcemia (low blood calcium  level) that is characterized by excessive production of parathyroid hormone in the attempt to normalize the low blood calcium  by releasing calcium  from bone.
Parathyroid hormone is produced by the four pea sized parathyroid glands that are located on the thyroid gland in the front of the neck. In part, because the thyroid and parathyroid glands share the same anatomic place in the body and because they have similar names, they are often confused although they have completely different actions.
Parathyroid hormone regulates calcium  and the opposing mineral phosphorus  in the blood. In secondary hyperparathyroidism, calcium  blood levels are low to normal while phosphorus  levels are increased which stimulates the outpouring of parathyroid hormone.
Q: How does secondary hyperparathyroidism differ from primary hyperparathyroidism?
What Is Secondary Hyperparathyroidism In Celiac Disease and/or Gluten Sensitivity?
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