The parathyroid glands are located behind the thyroid glands in the neck. They are usually two pea-sized glands, one on each side, and secrete parathyroid hormone (PTH), which helps the body maintain the correct balance of calcium and phosphorus.
PTH (parathyroid hormone) controls calcium and phosphorus levels in the blood. Functions of PTH (Parathyroid Hormone):
* Regulates the balance of calcium and phosphorus in body fluids and blood.
* Allows calcium to pass from bones into the blood.
* Ensures the absorption of calcium ions from digested food into the blood.
* Reduces the excretion of phosphorus from the kidneys, increasing its amount in the blood.
Measuring the levels of calcium and phosphorus in the patient’s blood, as well as PTH (parathyroid hormone) levels, provides sufficient information to check whether the parathyroid glands are functioning properly.
Even small changes in blood calcium levels can cause certain nerve and muscle disorders, making the parathyroid glands crucial in the human body.
If too much or too little PTH is produced, calcium levels in the body can dangerously increase or fall below normal.
Causes of High Parathyroid Hormone (PTH) Levels
- Vitamin D deficiency or excess in the body
- Calcium or magnesium deficiency
- Parathyroid gland diseases
- High calcium levels in the body
- Kidney diseases
- High phosphorus levels
Various symptoms may appear when PTH levels are elevated, including depression, fatigue, muscle and back pain, kidney stones, and constipation. If you suspect any of these symptoms, you should consult an endocrinology specialist.
Parathyroid Gland Diseases
- Hyperparathyroidism
- Hypoparathyroidism
- Parathyroid cancer











