The role of vitamin D is to promote the absorption of calcium in the body. Vitamin D is generally taken in the winter because the winter sun fewer opportunities, prone to vitamin D deficiency, especially children, the growth and development period. So the winter can give the child appropriate to take some vitamin D, but also sunshine as much as possible, promote the absorption of calcium.
The main physiological function of vitamin D
1, increase the body of calcium and phosphorus absorption;
2, to promote growth and bone calcification, and promote healthy teeth;
3, increased phosphorus absorption through the intestinal wall, and by renal tubular increasing reabsorption of phosphorus;
4, to maintain blood normal levels of citrate salt;
5, to prevent the loss of amino acids through the kidneys.
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