Author: xnewsline

Rheumatoid Arthritis and Vitamin D Deficiency: Evidence, Mechanisms, and Clinical Implications for Better Outcomes

Rheumatoid arthritis (RA) is a chronic, systemic autoimmune disease characterized by inflammatory synovitis, progressive joint destruction, and extra-articular manifestations. RA pathogenesis involves complex immune dysregulation, including activation of autoreactive T cells, B-cell antigen presentation, autoantibody production (e.g., rheumatoid factor and anti–citrullinated protein…Read More »