In Asia, the prevalence of metabolic syndrome have been dramatically increased. Therefore, the investigators intend to the collect the blood sample, laboratory, anthropometric, and body composition parameters prospectively to examine the risk factors of metabolic syndrome. Furthermore, the investigators will collect the data of carotid IMT and branchial ankle pulse wave velocity to clarify the metabolic risk factors of atherosclerosis.

Inclusion Criteria:

• Apparently healthy people who underwent medical routine check up in Korea Health Promotion Center.
• age > 20 years

Exclusion Criteria:

• History of cardiovascular disease (myocardial infarction, unstable angina, stroke, or cardiovascular revascularization)
• Stage 2 hypertension
• Severe renal or hepatic disease

Apparently healthy people who underwent medical routine check up in Korea University Helath Promotion Center.