The diagnostic criteria of metabolic syndrome is as follows;
1)waist circumference: male≧85cm, female ≧90cm
2)triglyceride ≧150mg/dl or HDL<40mg/dl
3)systolic blood pressure≧130mmHg or diastolic blood pressure≧85mmHg
4)fasting blood sugar>110mg/dl
1) is essential condition, and if a person has more than two factors of 2)-4), he has a metabolic syndrome. Prof.Nawata recomends repeated health check and self-control of obesity for preventing diabetes mellitus, hypertension and hyperlipidemia, resulting myocardial infarction and cerebral thrombosis.