What is ketonemia?

What is ketonemia?

• A. Elevated triglycerides
• B. High blood glucose
• C. Elevated circulating ketone bodies due to increased fatty acid oxidation occurring with starvation, catabolic illness or inadequate dietary carbohydrate intake
• D. Low ketone bodies after meals

Answer: (C)

Ketonemia is the presence of elevated ketone bodies in the bloodstream. This occurs when carbohydrate intake is low or during fasting, illness, or other catabolic states, causing the body to increase fatty acid oxidation for energy. The liver converts fatty acids into ketone bodies (acetoacetate, beta-hydroxybutyrate, and acetone), which circulate in the blood to be used by tissues, especially the brain, when glucose is scarce. The best description fits because it specifically describes elevated circulating ketone bodies produced from increased fat breakdown in those conditions. The other options describe unrelated metabolic features (high triglycerides, high blood glucose) or the opposite state (low ketones after meals).

Ketonemia is the presence of elevated ketone bodies in the bloodstream. This occurs when carbohydrate intake is low or during fasting, illness, or other catabolic states, causing the body to increase fatty acid oxidation for energy. The liver converts fatty acids into ketone bodies (acetoacetate, beta-hydroxybutyrate, and acetone), which circulate in the blood to be used by tissues, especially the brain, when glucose is scarce. The best description fits because it specifically describes elevated circulating ketone bodies produced from increased fat breakdown in those conditions. The other options describe unrelated metabolic features (high triglycerides, high blood glucose) or the opposite state (low ketones after meals).