Define metabolic syndrome and explain its relevance to type 2 diabetes risk and cardiovascular disease.

• A. Central obesity, high triglycerides, high HDL, hypertension, and impaired glucose tolerance.
• B. High HDL, low triglycerides, hypotension, and normal glucose tolerance.
• C. Obesity alone with no metabolic disturbances.
• D. Central obesity, high triglycerides, low HDL, hypertension, and impaired glucose tolerance.

Answer: (D)

Metabolic syndrome is a cluster of interrelated metabolic abnormalities that together signal insulin resistance and substantially raise the risk of developing type 2 diabetes and cardiovascular disease. The defining set typically includes central (abdominal) obesity, high triglycerides, low HDL cholesterol, high blood pressure, and impaired glucose regulation (such as impaired fasting glucose or impaired glucose tolerance). When at least three of these factors are present, the syndrome is diagnosed, and this combination explains why someone with metabolic syndrome has a much higher likelihood of progressing to diabetes and experiencing cardiovascular events.

This is why the best description includes central obesity, high triglycerides, low HDL, hypertension, and impaired glucose tolerance. It captures the dyslipidemia and hypertension that accompany insulin resistance, along with disturbance in glucose handling, which together drive cardiovascular risk and diabetes risk.

The other options don’t fit the pattern. One option lists high HDL, which is not part of metabolic syndrome (low HDL is the criterion). Another describes a favorable lipid and glucose profile that wouldn’t indicate the syndrome. The last option suggests obesity alone, which misses the requirement for multiple metabolic disturbances.