DF(Oat Bran) Intervention on Inflammation, Intestinal Flora, Disease Activity and Quality of Life in Patients With RA

The goal of this clinical trial is to test in Rheumatoid arthritis. The main question it aims to answer are: * To verify the effect of dietary fiber supplementation on reducing the level of inflammation; * To verify the effect of dietary fiber supplementation on improving disease activity and quality of life in patients with rheumatoid arthritis .To verify the effect of dietary fiber supplementation on regulating the production of anti-inflammatory short-chain fatty acid in the gut of patients with rheumatoid arthritis. The experimental group was supplemented with dietary fiber for 12 weeks, and the control group was fed with the Mediterranean diet. Before and after the intervention, 1 tube of 3ml blood and 1 soybean-sized stool were taken and a questionnaire was made