Skip navigation
A service of the U.S. National Library of Medicine
From the National Institutes of HealthNational Institutes of Health
   Other Topics: A B C D E F G H I J K L M N O P Q R S T U V W XYZ All Topics

Anemia

Also called: Iron poor blood 
 
 

If you have anemia, your blood does not carry enough oxygen to the rest of your body. The most common cause of anemia is not having enough iron. Your body needs iron to make hemoglobin. Hemoglobin is an iron-rich protein that gives the red color to blood. It carries oxygen from the lungs to the rest of the body.

Anemia has three main causes: blood loss, lack of red blood cell production, and high rates of red blood cell destruction.

Conditions that may lead to anemia include

Anemia can make you feel tired, cold, dizzy, and irritable. You may be short of breath or have a headache.

Your doctor will diagnose anemia with a physical exam and blood tests. Treatment depends on the kind of anemia you have.

NIH: National Heart, Lung, and Blood Institute

 
 
 

  • Start Here

    • AnemiaFrom the National Institutes of Health(National Heart, Lung, and Blood Institute)
    • Also available in Spanish
 

 

 
 
Basics Learn More Multimedia & Cool Tools
 

 

 
Research Reference Shelf For You