Children can eat high-fat marine fish and fish eggs, animal liver, egg yolk, cream and cheese, while lean meat, milk and nuts contain trace amounts of vitamin D, while vegetables, grains, their products and fruits contain little or no vitamin D activity.
Extended data:
I. Functions
1, improve the absorption of calcium and phosphorus in the body, and make the plasma calcium and phosphorus levels reach saturation;
2. Promote growth and bone calcification, and promote dental health; ?
3. Increase the absorption of phosphorus through intestinal wall and the reabsorption of phosphorus through renal tubules; ?
4. Maintain the normal level of citrate in blood;
5. Prevent the loss of amino acids through the kidneys.
Second, the health effects of vitamin D deficiency or excess.
Lack of vitamin D can cause rickets, hand and foot convulsions and rickets. Long-term excessive intake of vitamin D(5000IU/ day) will cause hypercalcemia and hypercalcemia. It is characterized by anorexia, excessive thirst, nausea, vomiting, irritability, weakness and diarrhea. In severe cases, it will die due to calcification of kidney, heart and aorta.
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