Bone mineral density (BMD) is a measurement of the concentration in
bone of minerals (mostly calcium and phosphate) that are vital for strong
bones. A high bone mineral density indicates above-average amounts of calcium
and phosphates in the bones, while a below-normal bone mineral density can
indicate a loss of bone mass, possibly from osteopenia or osteoporosis.
Last Updated:September 23, 2008
Author:Shannon Erstad, MBA/MPH
Medical Review:Anne C. Poinier, MD - Internal Medicine & Carla J. Herman, MD, MPH - Geriatrics