Anemia of Inflammation
Condition
(Anemia of Chronic Disease; Hypoferremia of Inflammatory Disease; ACD)
Definition
Anemia is a low level of healthy red blood cells (RBCs). RBCs carry oxygen from the lungs to the rest of the body. When red blood cells are low, the body does not get enough oxygen. Anemia of inflammation can happen when a person has another health problem.
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Causes
The reasons why someone has fewer RBCs can be:
- The red blood cells are not living as long as they should
- The body is not making enough new red blood cells
- The body has less of a hormone that tells it to make the cells
- The body is not using iron the right way
The cause of anemia is not always known.
Conditions that can lead to anemia over time include:
- Chronic infections, such as tuberculosis, lung abscess, and subacute endocarditis
- Noninfectious inflammatory diseases, such as:
- Common childhood infections, including:
- Heart failure, thyroid disease, and kidney failure
- Cancers such as:
- Hodgkin disease
- Lung cancer
- Breast cancer
- Obesity
- Diabetes mellitus
- Other serious illness
- Injuries from trauma
Risk Factors
The risk of anemia of inflammation is higher in:
- People who have one of the conditions listed above
- Older adults
Symptoms
Anemia often develops slowly. There may be few or no symptoms. Most symptoms are mild but may include:
- Pale skin
- Lightheadedness
- Fast heartbeats
- Feeling tired
Diagnosis
The doctor will ask about symptoms and past health. A physical exam will be done. Blood tests will be done to show the level of RBCs and how healthy they are. A diagnosis can be made based on blood tests and health history.
Treatment
Anemia may get better if the underlying disease is treated. Some people may also benefit from iron supplements.
Blood transfusions may be needed if the anemia is severe. These give healthy RBCs from a donor.
Medicine may also be used to help RBCs grow.
Prevention
It is not clear how to prevent anemia of inflammation. Managing some health problems may reduce the risk of it.
Iron Disorders Institute
National Heart, Lung, and Blood Institute
CANADIAN RESOURCES:
Canadian Cancer Society
Health Canada
Iron Disorders Institute
National Heart, Lung, and Blood Institute
CANADIAN RESOURCES:
Canadian Cancer Society
Health Canada
References
- Anemia of inflammation. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/anemia-of-inflammation.
- Ganz T. Anemia of Inflammation. N Engl J Med, 2019; 381: 1148-1157.
- Weiss G, Ganz T, Goodnough LT. Anemia of inflammation. Blood, 2019; 133(1): 40-50.
- What is anemia? National Heart, Lung, and Blood Institute website. Available at: https://www.nhlbi.nih.gov/health/anemia.
Contributors
- Marcin Chwistek, MD
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