The normal range value of uric acid at the age of 65 is 150~416μmol/L for men, and the normal range value for women is 89~357μmol/L. Uric acid levels in the blood exceeding 420μmol/L in two tests on a non-same day are generally diagnosed as hyperuricemia. Uric acid is an intermediate product of purine metabolism. Non-purine-based precursor simple substances (such as amino acids, etc.) in food are broken down by enzymes to produce purine nucleotides, which finally generate uric acid. The concentration of uric acid in the blood is too high for a long time, it will be in the form of crystalline salt, deposited in the joints, soft tissues, cartilage, kidneys and induced gout. People with elevated uric acid are advised to focus on low purine foods in their regular diet. For those who cannot control the uric acid level even with dietary adjustments, it is recommended to take uric acid-lowering medications such as febuxostat, allopurinol, and benzbromarone under the guidance of a physician.