Goals: The effects of cinnamon on clinical symptoms, fasting blood glucose, lipid profile, liver enzymes, blood pressure and some inflammatory biomarkers in women with rheumatoid arthritis referred to rheumatology clinic colleague, 40 female patients with rheumatoid arthritis after examination by a rheumatologist enrolled in the study And randomly will be divided into two groups: intervention and placebo. Inclusion criteria: Patient consent to participate in the study- Diagnosis of rheumatoid arthritis According to american college Rheumatology criteria (ACR) -Female gender-Age over 18 years-The disease duration for at least two years-Having active disease- Exclusion criteria:Rejection of cinnamon capsules-Developing sudden acute illness،Immigration،Any change in treatment protocol and drugs that led to the removal of the study, Intolerance or food allergy.interventions: the intervention group four capsules 500 mg Cinnamon and the other group will use placebo for 8 weeks. At the beginning and end of the study Clinical sign acorrding to the number of swollen joints,number of painful joints and indicators of disease activity score in 28 joints by using DAS-28 questionnaire, serum levels of fasting blood sugar , lipid profile(TC,TG,LDL.c,HDL.c), liver enzymes ALT,AST, inflammatory markers CRP, TNF- α, ESR and blood pressure will be measured and compared between the two groups.