Suggest reading up on different studies showing that magnesium and vitamin K2 and D3 is needed to put the calcium where it is needed, in the bones. Excellent info on this is 'Your Bones' Lara Pizzorno. Always look to see who is behind any study - usually or so often find, it is writers for pharma. Pharma are not at all happy about people finding out about such efficacious treatments, well away from their bisphosphonates with their very nasty side effects. No need to go there. But, does need correct and *judicious use of supplements and vitamins - but can be assured no osteonecrosis or side effects of that nature.