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Vitamin D level can be high, but little benefit: due to kidney, genes, low Magnesium etc.

A person can have a high level of vitamin D in their blood stream,

but the cells might not get much benefit from it - due to:

  1. Kidney problems
  2. Vitamin D not converted well in other areas of the body (besides the Kidney): gene problems
  3. Low level of Magnesium - which is needed by the cells to utilize Vitamin D
  4. Low level of other Vitamin D cofactors, such as Calcium - especially needed for muscular-skeletal problems
  5. Vitamin D receptors in cells are working poorly

Just as with Magnesium and Calcium, the vitamin D level in the blood is easily measured, but results can give a wrong impression

Far better to measure the level in the cell - but extremely expensive

You might have a good level of vitamin D in the blood (say 40 - 50 ng),

but genes and lack of cofactors might prevent your getting the benefit of vitamin D,

all around your body, or in the case of some genes, just certain body locations

For the health problems which take a long time to develop, such as cancer,

You could have 40-50 ng of vitamin D in the blood but would have little or no indication that

  1. your kidney was not functioning well
  2. gene was malfunctioning, not notice until it was too late

A guess: 30% of the population will not get all of the benefits of vitamin D in their blood

Solution, while waiting for low cost DNA tests, get a higher level of vitamin D - perhaps 80 ng
https://www.23andme.com has low cost DNA tests. Their very simple test has dropped to $99 as of March 2013
Nice Interview of 23andMe CEO on Medscape June 2014 video and transcript

  1. Take more vitamin D supplements
  2. How you might double your response to vitamin D can get 2X more response for the same amount of supplement
  3. Get more UVB at home
  4. Optimize vitamin D from the sun

See also VitaminDWiki

Reductions in Vitamin D is.gd/VitDReductions

Vitamin D level can be high, but little benefit: due to kidney, genes, low Magnesium etc.        
16154 visitors, last modified 28 Nov, 2014,
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