Vitamin D3 is a kind of vitamin D. Everyone is familiar with vitamin D, it is a fat-soluble vitamin. It is a hormone precursor that acts on calcium and phosphorus metabolism. It is closely related to sunlight, so it is also called "sunshine vitamin". So what is the relationship between vitamin D3 and vitamin D?
Where Does Vitamin D3 Come From?
Your body mainly synthesizes it. Human skin contains one type cholesterol that becomes vitamin D3 when exposed to sunlight. Therefore, if the child can fully receive direct sunlight on the skin for more than 4 to 6 hours, the vitamin D3 synthesized by itself can basically meet the needs.
but! Under the influence of problems such as air pollution and weather changes in various places, the time that people in various countries receive sunshine is decreasing. In addition, many countries clearly stipulate that they should limit the time they receive sunlight. Therefore, worldwide, the phenomenon of vitamin D deficiency is quite widespread. Another thing to consider is the possible increase in skin cancer caused by UV exposure.
Difference Between Vitamin D And D3
Vitamin d3 is actually an element of the vitamin d family. Vitamin D has various forms such as D2, D3, D4, D5, D6 and D7 according to the structure of its side chain. So it seems that the nutrition of vitamin d is more comprehensive than vitamin d3? Yes, vitamin D nutrition is more comprehensive. But there are only two elements in vitamin d that are most useful for health, vitamin d2 and vitamin d3. Vitamin d3 is the most suitable for humans, and it is also an element with the highest metabolic rate in the vitamin d family.
Therefore, it is simple to understand that vitamin d covers vitamin d3, and the nutritional difference is not large. However, the main purpose of vitamin d supplementation for infants is to supplement vitamin d3, so most mothers will directly choose vitamin d3 instead of vitamin d.