It is recommended to have three or more of the following as metabolic syndrome: 1) abdominal obesity: waist circumference greater than 90 cm for men and 85 cm for women; 2) blood triglycerides (TG): greater than 1.7 mmol/l; 3) blood HDL-C less than 1.04 mmol/l; 4) blood pressure greater than or equal to 130/85 mmHg and/or recognized as Hypertension and treated; 5. Fasting blood glucose greater than or equal to 6.1mmol/l or 2 hours postprandial blood glucose greater than or equal to 7.8mmol/l or a history of diabetes mellitus.