Maintaining a Healthy Immune System There are many beneficial things you can do to help maintain a healthy immune system. We recommend this great resource written by Dr. Leonard Calabrese, R. J. Fasenmyer Chair of Clinical Immunology at Cleveland Clinic. Read More Additional Resources UpToDateJohns HopkinsMayo ClinicArthritis Patients ServicesArthritis FoundationCreaky Joints Disease Societies Systemic Lupus Erythematosus (SLE)Spondylitis Association of America (SAA)Sjogren’s FoundationVasculitis Foundation