LYCOS RETRIEVER 
Sarcoidosis: African Americans
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Sarcoidosis is most often diagnosed in young adults (20-40 years old), occurring roughly equally in men and women. It is much more common among African-Americans than among white Americans, and is very rare among Hispanic-Americans, Asian-Americans, and others racial groups in America. Demographics worldwide are variable, with the highest occurrences in Scandinavia and among white, red-haired Irish women. Although these facts are interesting, they have been of little help in identifying what causes sarcoidosis.
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The cause of sarcoidosis is not yet known. Some factors may be infections, an abnormal response of the immune system or genetics. It usually develops between the ages of 20 and 40. It is most common among Swedes and African American, although it can occur in anyone
Source:
The cause of sarcoidosis is unknown. It may result from an infection or from an abnormal response of the immune system. Inherited factors may be important. Sarcoidosis develops predominantly between the ages of 20 and 40 and is most common among Swedes and American blacks, although it can occur in anyone.
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