< Back to All Videos thirdAGE > What is Rheumatoid Arthritis? Up Next... 10 Treating Carpal Tunnel Syndrome Treating Carpal Tunnel Syndrome Treating Back Pain Treating Knee Osteoarthritis Loading the player ... Bone + Joint Health What is Rheumatoid Arthritis? Why does rheumatoid arthritis, or RA, cause the body to mistakenly attack the joints, and what can be done to help? Related Videos Treating Carpal Tunnel Syndrome Treating Back Pain Treating Knee Osteoarthritis Yoga and Back Pain Share this: