< Back to All Videos thirdAGE > What is Rheumatoid Arthritis?Up Next... 10Treating Carpal Tunnel Syndrome Treating Carpal Tunnel Syndrome Treating Back Pain Treating Knee Osteoarthritis To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video 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 Technology and Hand Pain Supplements and Bone Health Treating Carpal Tunnel Syndrome Treating Back Pain Share this: