A bone density test measures the amounts of calcium and other minerals in your bones, and how likely you are to develop thin and brittle bones — characteristics of a condition called osteoporosis.

The womenshealth.gov website says your doctor should evaluate the following factors before recommending a bone density test:

  • Your age, and whether you have become menopausal.
  • How tall you are and how much you weigh.
  • Whether you are a smoker and drink alcohol.
  • Your family history of a broken hip, particularly among your parents.
  • Medications you take.
  • Whether you have a disorder that increases your risk of osteoporosis.

 

Source:http://www.nlm.nih.gov/medlineplus/news/fullstory_132786.html