Rheumatoid arthritis is the second most common type of arthritis and the most severe. It affects 5 to 8 million Americans. Rheumatoid arthritis may begin at any age, but is most common to strike people in their 30’s and 40’s. When it affects children, it is termed Juvenile rheumatoid arthritis. It affects women three times more often then men. The cause of Rheumatoid arthritis is unknown, but it is clear that the immune system is linked. The immune system normally protects against foreign invaders and disease. Instead, in Rheumatoid arthritis, it ....

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