Why Sun Protection is so Important for Patients with Autoimmune Diseases It’s important to protect yourself from the sun when you have an autoimmune disease. Dr. Laura Cappelli reviews the best practices for enjoying the sun safely. In This VideoLaura Cappelli, MD, MHS, MSDr. Cappelli is an Assistant Professor of Medicine in the Johns Hopkins Division of Rheumatology. Her research focuses on inflammatory arthritis and on the effects of cancer immunotherapy.