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Ketone Utilization

Meaning

The physiological process by which the body shifts its primary energy substrate from glucose to ketone bodies—specifically acetoacetate, beta-hydroxybutyrate, and acetone—as a highly efficient alternative fuel source. This metabolic state, known as ketosis, is typically induced by carbohydrate restriction or fasting, resulting in enhanced metabolic flexibility and providing a neuroprotective fuel for the brain. Optimized Ketone Utilization is a marker of metabolic health and resilience.