Calcium is a mineral needed for bone health, muscle movement, and nerve function. Hypercalcemia is higher than normal levels of calcium in your blood.
Short-term or acute high levels of calcium can cause muscle twitching or weakness. Long-term high levels of calcium can lead to
kidney stones, bone problems, and may intefere with mental abilities.
Vitamin D helps to absorb calcium from food or supplements. Once in your body, calcium may be stored in the bones or exist in the blood and cells. Levels of calcium in the blood are normally regulated by hormones from the parathyroid gland. Calcium is excreted through the kidneys.
Hypercalcemia may occur if an illness, such as cancer, or medication interferes with this process or destroys bone and other tissue releasing extra calcium into the blood. The most common causes of hypercalcemia are medications or an
can also cause temporary hypercalcemia. Decreased fluid in the blood causes an increase in concentration, but not amount of calcium.
Factors that may interfere with hormones and lead to hypercalcemia:
Certain disorders such as adrenal insufficiency and
Certain medications such as lithium
Factors that may increase the amount of calcium in the body or blood include:
Excess vitamin D and/or vitamin A supplements—increases absorption of calcium and release of calcium from the bones into the blood
Certain medications, including diuretics that reduce the amount of calcium eliminated and calcium-containing antacids
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