Re:A hot bath has benefits similar to exercise
by jcranmer on Monday March 20, 2017 @10:33PM
(#13919405)
As I'm reading the data... it sounds like like low vitamin D makes it harder to get enough magnesium, but high vitamin D has no effect on magnesium levels and (high or low) magnesium has no effect on vitamin D levels.
So the recommendation for vitamin D+magnesium would basically be "we think you've got low both if you've got low vitamin D, so just take both of them," relying on kidney functions to fix anything you've got too much of.
Vitamin D is currently the only Essential Vitamin or Mineral which appears to have deficiency rates at a similar level to Magnesium, if not greater. The metabolism of Vitamin D inherently is linked to Magnesium. Magnesium levels in the brain can be negatively regulated by an excess of parathyroid hormone (PTH), where PTH causes release of calcium into the blood (being met with an increase of magnesium to retain homeostasis) possibly being a contributing factor to chronic depletion of magnesium concentration in neural tissue. As vitamin D reliably suppresses excess PTH, it may exert neural benefits secondary to preservation of Magnesium levels in the brain.
A Vitamin D deficiency could lead to magnesium depletion (Vitamin D deficency allows excess PTH, releases calcium, depletes magnesium). So in fact, the opposite is the case right? At sufficient Vitamin D levels you shouldn't have to supplement magnesium, assuming no dietary deficiency of it. Right?