Metabolic Syndrome in Rheumatoid Arthritis
Rheumatoid Arthritis (RA) is an autoimmune chronic inammatory disease of unknown etiology (Aletaha et al. 2010). The prevalence of RA in adult population is approximately 0.5%–1%. It is observed in all ethnic groups (Alarcón 1995), with a female predominance, especially in patients between the fourth and sixth decades of life (Silman et al. 2002). In Brazil, a multicenter study also found prevalence of RA in adults ranging from 0.2% to 1.0% (Marques Neto et al. 1993).