Ok, so today we will write about the functions of vitamin D. Nice and easy.
- The most important role of vitamin D is to regulate Calcium and Phosphorus metabolism, contributing to the optimal function of the muscles and nerves, with a key role in bone formation and mineralization.
- In collaboration with the parathyroid hormone, vitamin D as calcitriol (its active form) will maintain stable levels of Calcium and Phosphorus in the bloodstream (homeostasis).
- The calcitriol also acts like a steroid hormone, turning on genes related to bones, kidneys, intestine, having a role in immunity, endocrine system, skin, tumor cells activity and blood cells production (hematopoietic role).
- At low concentrations stimulates cell growth, at high concentrations inhibits cell proliferation and activates programed cell death (side note: calcitriol was identified in a variety of tumor cells, but there is not enough evidence to link vitamin D to cancer risk or immune status).
There are many hypes related to vitamin D, but the research suggests that low vitamin D levels are a marker of ill health, rather than a cause of the disease. The illness leads to low levels of vitamin D and not vice versa.
Next post will be about vitamin D deficiency and toxicity.
Yours truly,
George
P.S. If you are Romanian, you can also publish your post link in the Publish0x Romanian Community Facebook group for others to read it.
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Disclaimer: This text also can be re-published on my personal blogs, such as this one.
