What is a bone density test and do dietary changes help?

If you have a bone density test done in a hospital, you will probably lay on a bed while a mechanical arm passes over you, making an x-ray. This takes about 10 minutes. Smaller bone density tests done at pharmacies are called peripheral tests; they test smaller extremities. Diets high in calcium (both dairy and non-dairy) and Vitamin-D can help prevent the loss of bone mass.