Conditions InDepth: Anemia
Anemia is a condition characterized by an inadequate amount of red blood cells, which are produced in your bone marrow. Red blood cells contain hemoglobin, a substance that picks up oxygen from your lungs, carries it throughout your body, and gives it to your cells. Your cells need oxygen to perform the basic functions that generate energy and keep you alive. In addition, hemoglobin picks up some of the carbon dioxide given off by your cells and returns it to the lungs, where it is exhaled when you breathe out. Without enough red blood cells to transport oxygen to your cells and carbon dioxide away from your cells, your body functions at a less than optimal level.
|Copyright © Nucleus Medical Media, Inc.|
There are many causes of anemia, which can be broadly grouped into three categories:
If you are bleeding heavily, you will rapidly become anemic and may develop severe symptoms including shock. Slower leakage of blood that you are unaware of, such as bleeding from a stomach ulcer or from colon cancer , can also exceed your bone marrow’s ability to replace blood supplies, eventually resulting in anemia.
Failure to Make Enough Normal Red Blood Cells or Hemoglobin
Dietary intake of iron, folic acid, and vitamin B
Rapid Destruction of Red Blood Cells
Red blood cells normally last for three to four months before they are destroyed and their contents recycled. If they are defective, or if the recycling process is accelerated, the marrow may not be able to keep up with the demand for new red cells. Defective red blood cells are more fragile and therefore do not last as long. Normal red blood cells may be destroyed rapidly by diseases, such as malaria and Rh incompatibility between a mother and her unborn child.
- Marcin Chwistek, MD
- Reviewed: 09/2014
- Updated: 09/17/2014
Please note, not all procedures included in this resource library are available at Allegiance Health or performed by Allegiance Health physicians.
All EBSCO Publishing proprietary, consumer health and medical information found on this site is accredited by URAC. URAC's Health Web Site Accreditation Program requires compliance with 53 rigorous standards of quality and accountability, verified by independent audits. To send comments or feedback to our Editorial Team regarding the content please email us at HLEditorialTeam@ebscohost.com.
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.