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The metabolic syndrome (insulin resistance syndrome, syndrome X) is an important risk factor for cardiovascular disease and type 2 diabetes; it consists of a constellation of metabolic abnormalities that includes central obesity, insulin resistance, hypertension, and dyslipidemia, high triglycerides, and low HDL. The prevalence of metabolic syndrome varies among ethnic groups; it increases with age, degree of obesity, and propensity to type 2 diabetes.