Calcium shift: An interesting hypothesis.

More serendipity! Billy the k left a comment that piqued my curiosity.

From http://www.health-heart.org/acceuil.htm The atheroma 'junk' in the media is cholesterol + calcium in older people.

From Aging and calcium as an environmental factor. (emphasis mine)
"The consequences of calcium deficiency might thus include not only osteoporosis, but also arteriosclerosis and hypertension due to the increase of calcium in the vascular wall, amyotrophic lateral sclerosis and senile dementia due to calcium deposition in the central nervous system, and a decrease in cellular function, because of blunting of the difference in extracellular-intracellular calcium, leading to diabetes mellitus, immune deficiency and others.

I highlighted amyotrophic lateral sclerosis in red, as many Facebook friends have been having buckets of water & ice cubes tipped over themselves to raise money for research into this horrible & ultimately fatal condition.

So, what prevents & reverses migration of calcium from hard tissues to soft tissues?
Clue: It carboxylates osteocalcin in bone matrix Gla proteins. Yes, it's Vitamin K2.

See also Calcium, parathyroids and aging. N.B. 50iu/kg bodyweight/day of Vitamin D3 significantly lowers parathyroid hormone.