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Where is calcium stored in the body?

Published in Human Biology 2 mins read

The vast majority of calcium in the body is stored in bones and teeth. This reservoir provides structural support and hardness to the skeletal system.

Calcium Storage Breakdown

  • Bones: Approximately 99% of the body's calcium is stored within the bones. This calcium serves not only a structural role but also as a readily available source that the body can draw upon when calcium levels in the blood are low.

  • Teeth: Similar to bones, teeth also contain a significant amount of calcium, contributing to their strength and resistance to decay.

  • Blood and Soft Tissues: Only about 1% of the body's calcium is found in the blood, extracellular fluid, and soft tissues. However, this small amount is crucial for various bodily functions.

Why Calcium Storage Matters

Maintaining adequate calcium storage is essential for overall health because calcium plays a vital role in:

  • Muscle Function: Calcium is necessary for muscle contraction, including the heart muscle.
  • Nerve Transmission: Nerves require calcium to transmit messages between the brain and the rest of the body.
  • Blood Clotting: Calcium is a key factor in the blood clotting process.
  • Enzyme Function: Many enzymes require calcium to function properly.

If blood calcium levels drop too low, the body will pull calcium from the bones to maintain these critical functions. Chronic calcium deficiency can lead to weakened bones and increased risk of fractures. Therefore, ensuring adequate calcium intake through diet and, if necessary, supplementation is important for maintaining bone health and overall well-being.

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