The human body can't synthesize vitamin D by itself, but only when it is in the sun. However, due to the damage of ultraviolet rays and sunlight, few people take the initiative to bask in the sun. Secondly, breast milk contains a small amount of vitamin D, so both infants and adults need extra vitamin D supplementation, especially infants.
Rickets is prevalent among children. According to the data survey, the average detection rate of rickets in China was 20% from October to February, 2005, so rickets should be prevented from childhood.
Children's doctors suggest that while supplementing calcium, it is necessary to supplement the baby with an appropriate amount of D3, so that the absorption effect of calcium will be better.
Vitamin D3 mainly has the following three 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 sound teeth.
3. Maintain the normal level of citrate in blood and prevent the loss of amino acids through the kidney.
It is wrong to supplement calcium blindly without vitamin D3. Without the help of vitamin D3, no amount of calcium supplements can be absorbed by the body.