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Answer to your Health Question

Question (05/25/2012):

Title: Vitamin D 25-OH function in the body

What exactly is vitamin D 25-OH function in the body?

Answer:

25-hydroxyvitamin D, also known as 25-hydroxycholecalciferol, calcidiol or abbreviated 25-OH Vit D, is the main vitamin D metabolite circulating in plasma.

25-OH Vit D is the storage form of vitamin D in the human body.

Some activity of 25-OH Vit D has been reported on intestinal calcium adsorption.

The circulating levels of 25-OH Vit D are important indicators and/or corroborators of mineral metabolic problems.

Vitamin D is a steroid vitamin, a group of fat-soluble prohormones, which encourages the absorption and metabolism of calcium and phosphorous.

Vitamin D is a powerful pre hormone vitamin that serves many functions in the body.

Serum concentration of 25-hydroxyvitamin D [25(OH)] reflects vitamin D produced in the skin and obtained from food and supplements.

Numerous studies use plasma 25-OH-D as a measure of vitamin D status.

It is generally accepted that of the circulating vitamin D metabolites, serum 25-OH vitamin D (25[OH] D) measurements best reflect clinical vitamin D.

Vitamin D status is best determined by the serum 25 (OH) D concentrations because this reflects dietary sources as well as vitamin D production by UV light in the skin.

To assess vitamin D deficiency, serum levels of 25-OH vitamin D3 are usually tested.

The more vitamin D you take, the higher the 25 (OH) D levels in your blood.

Vitamin D in the form of 25(OH) 2 is a potent immune system modulator.


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