Most of these tests use some form of x-rays. Bone mineral density is reported as grams per square centimeter. This compares your bone mineral content to people of your same age and sex. The higher your peak bone density, the better. Take calcium supplements , especially calcium carbonate or calcium citrate.
Vitamin D can help with calcium absorption.
Talk to your doctor about the right amounts of supplements to take. Do more weight-bearing exercise . This seems to signal the bones to retain more mineral content. Stop smoking and reduce your intake of caffeine and alcohol. Reduce your risk of falling .