Bone Mineral Density tests measure the density of minerals in your bones to determine bone strength. This could often be found to be beneficial. However more information can be found at http://www.webmd.com/osteoporosis/bone-mineral-density-test

Due to mineral loss and lower activity, bone density decreases.

To help with low bone mineral density you should start by drinking more milk, and getting a calcium pill.

bone mineral density

bone mineral density at the hip and spine