Density is a measure of how compact and solid an object (like bone) is compared to its size. An object with high density is heavy and usually strong for its size; an object with low density is lighter and usually unable to bear much weight.

For example, osteoporosis causes the internal structure of bones to become less compact, or to have lower density. This makes bones more porous and weaker than normal, healthy bones.

Last Updated: November 21, 2008

Author: Shannon Erstad, MBA/MPH

Medical Review: Anne C. Poinier, MD - Internal Medicine & Kirtly Jones, MD - Obstetrics and Gynecology

related physicians

related services

Bon Secours International| Sisters of Bon Secours USA| Bon Secours Health System

This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Privacy Policy. How this information was developed to help you make better health decisions.

© 1995-2010 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.