Vitamin D is actually a hormone linked to calcium metabolism and bone growth. Vitamin D is also an important vitamin linked to calcium concentration in the blood. If the calcium level in the blood is reduced, vitamin D will re-absorb more calcium from the small intestine and kidneys. In addition, the blood’s calcium level will rise when calcium is released from bones. When the calcium level in the blood increases, a hormone called calcitonin is secreted, and calcium is absorbed into the bones. As the body manages blood calcium levels very sensitively, you will get muscle cramps when the level is too low, or calcium will stick to your arteries […]

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