Add Yahoo as a preferred source to see more of our stories on Google. Maintaining the proper levels of calcium and vitamin D gets more important as people age in order to fend off bone density ...

As people move into their 50s and beyond, bone health becomes a bigger concern, and how much calcium and vitamin D you get can make a real difference. That's because bone loss speeds up with age, ...

A calcium blood test checks your calcium levels to monitor bone, kidney, and thyroid diseases. You may get one of two main types of calcium blood tests: total calcium and ionized calcium tests. Too ...