[contentuser]

Risk Factors and Causes of RA


The cause for RA is unknown; however, the immune system plays a very important role in disease development. Rheumatoid arthritis occurs as a result of an abnormal immune system response, but the cause for this abnormal response has not been identified.

Approximately 70–80% of patients who have RA also have high levels of an antibody called rheumatoid factor, which may indicate an immune system abnormality. An antibody is a protein that is produced in...Read the full article