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High-Fat Fuel Utilization

Meaning

High-Fat Fuel Utilization describes the metabolic state where the body, including vital organs like the heart, muscle, and brain, preferentially relies on fatty acids and their derivatives, ketone bodies, as its primary source of energy. This metabolic flexibility is a key feature of an optimized bioenergetic system, often achieved through nutritional ketosis or prolonged fasting. The ability to efficiently tap into fat stores is clinically significant for sustained energy, body composition management, and reducing reliance on exogenous carbohydrate intake.