In our bodies, there is something called 25-hydroxy calcifediol, which is a form of vitamin D3 present in our bodies. When the 7-dehydrogenated cholesterol in human skin is exposed to ultraviolet radiation from the sun, it is converted to vitamin D3, which is converted to 25-hydroxy calcifediol in the liver, and then converted to 1, 25-dihydroxy vitamin D3, the active form of vitamin D3, by the kidney. It is also the form in which vitamin D3 is stored in the bloodstream.
25-hydroxy calcifediol plays an important role in our health, growth, and development, and is also associated with many diseases. If the body lacks 25-hydroxy calcifediol, it will not only affect the absorption of calcium and phosphorus, but also affect the normal development of bones and teeth, and in severe cases can cause rickets in children or adults.
To maintain the intake of 25-hydroxy calcifediol, we can take adequate vitamin D daily, which can also be obtained through sun exposure and diet. In case of serious deficiency, regular medical treatment is required, and timely treatment facilitates rapid recovery.