Around 99 percent of the calcium in the human body is found in the bones and teeth; it is essential for the development, growth, and maintenance of bone. Calcium continues strengthening the bones of humans until they reach the age of 20-25 when bone density is highest. After that age, bone density declines, but calcium continues to help maintain bones and slow down bone density loss, which is a natural part of the aging process.
Calcium regulates muscle contraction, including the beating of the heart muscle. Calcium plays a key role in normal blood coagulation (clotting).
It is important to note that calcium is not easily absorbed without the presence of vitamin D.
Hypocalcemia, commonly known as calcium deficiency disease, occurs when calcium levels in the blood are low. A long-term deficiency can lead to dental changes, cataracts, alterations in the brain, and osteoporosis, which causes the bones to become brittle.
Complications of hypocalcemia can be life-threatening, and if the condition goes untreated, it could eventually lead to death.