Rheumatoid arthritis, also known as RA, is a disease that affects about 1.3 million Americans. For every 100,000 individuals, 41 are diagnosed with RA every year. Approximately 1.3 million Americans have RA. This article contains info about rheumatoid arthritis. Table of Contents hide 1 What is Rheumatoid Arthritis? 2 What Causes Rheumatoid Arthritis? 2.1 Risk … Continue reading Info About Rheumatoid Arthritis