Vit D needs magnesium to convert to the form that is usable by the body. And you need to take it or the vit D will just deplete it. You're probably deficient anyway, most people are because soils are depleted due to modern agriculture methods. And being hypo will make that worse. Many functions in the body need magnesium. It's a wonderful thing to take.
But, no point in testing it because the results are not reliable due to the way the body handles magnesium. It will take magnesium out of the cells in order to have a good level in the blood. So, you could have a good result on a blood test but still be deficient in magnesium. But, the good thing is that it is water-soluble, so as long as your kidneys are in good health, just take it and any excess will be excreted.
Working through this using Helvella's blog and my saved posts with SlowDragons etc wisdom More to do but current version . Added when to dose, ranges of blood tests.
This is a brilliant idea, it would make it so much easier to have all this knowledge in an easy to read chart. Thank you its much appreciated the effort and time this is taking.
In people with healthy kidneys and a normal diet and a sensible intake of magnesium it is probably rare to ever have too much magnesium because the kidneys will excrete any excess.
But in people with non-functioning kidneys/kidney failure, or very poor kidney function excess magnesium could build up.
I found this link on the subject that might be helpful - although I am not sure what dose of magnesium they were using (in mg) for their research.
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