Sunday, October 18, 2009

New standards for vitamin D

The lack of vitamin D causes rickets. This is where bone gets soft and then deforms as it has lost its strength. An x-ray of a child with rickets is shown to the left. (Picture credit).

Up until 1997 rickets was the sign of vitamin D adequacy or lack. This resulted in the belief that nearly everyone in the western world had adequate levels of vitamin D.

However with the rise of obstreperous vitamin D was revisited, relooked at from a modern perspective. It because clear that lack of vitamin D was aggravating and maybe even causing osteoporosis.

So in 1997 the standard changed from rickets to measuring a blood component. The blood compound is called 25-hydroxycholecalciferol, stated in short hand of 25(OH)D. It is the biologically active form of vitamin D found in the blood.

This leads to the point that if you are at risk from osteoporosis that you should get a blood test to measure how much vitamin D you have in your blood. 

Now interpreting the test, "normal" range is 20–150 nmol/L (30.0 to 74.0 ng/mL). Levels below 80nmol/L are often seen as deficient. So if you have blood levels below this you should be taking a supplement of 10–30 µg/day or 400 - 12 000 IU's per day. Otherwise spend 15 minutes a day sitting in the sun with arms and legs exposed, doing this outside of high risk of sunburn time.

1 comment:

  1. Greasy fish, similar to fish, mackerel, and salmon. Nourishments sustained with nutrient D, identical to some dairy items, squeezed orange, soy milk, and oats. Meat liver. Cheddar. Egg yolks. In this food, through high vitamin D.