You need Vitamin D for so many reasons…moving calcium formt he small intestings into your bloodstream for one. A vitamin D deficiency could lead to hip and bone fractures.

Magnesium is excellent to have daily also because it increases calcium absorption from the blood into the bone. Here is the thing though - too much calcium will block the absorption of magnesium causing muscle cramps, trembling, and hair loss. Moderation is key with everything!

You have to maintain a good balance between calcium and phosphorous (5:1) because too much phosphorous also depletes calcium.

A great resourse to read up more on this is Food and Our Bones by Annemarie Colbin