Back & Neck Pain

  1. Home
  2. Health
  3. Back & Neck Pain

Osteoporosis Definition

By Anne Asher, About.com

Created: September 15, 2005

About.com Health's Disease and Condition content is reviewed by our Medical Review Board

Definition: Osteoporosis is a disease in which the mass of the bones is decreased. People with osteoporosis are at an increased risk for fracture.

Bone marrow normally has small holes in it. The holes of osteoporotic bone are much larger.

There is no one cause of osteoporosis. Factors range from how much exercise the patient has gotten over the years, to how well the bones formed in childhood, to nutritional factors and more.

Explore Back & Neck Pain

About.com Special Features

Do I Have Allergies?

Are your symptoms merely irritating, or could they be a sign of allergies? More >

Preventing Headaches

The best way to treat a headache is to prevent it. Learn how. More >

We comply with the HONcode standard for trustworthy health information: verify here.

Back & Neck Pain

  1. Home
  2. Health
  3. Back & Neck Pain
  4. Conditions of the Spine
  5. Osteoporosis and Fracture
  6. Osteoporosis

©2009 About.com, a part of The New York Times Company.

All rights reserved.