Fatty acid oxidation is the process of breaking down stored fat to produce energy—what “burning fat” actually means. Research by Anton on the metabolic switch shows this becomes primary when glucose is low: during fasting, prolonged exercise, or carbohydrate restriction. Insulin is the key regulator; when elevated, fat stays locked in cells.
This companion covers beta-oxidation basics, when fat burning dominates, the insulin switch, ketone production, and building metabolic flexibility. (3 min read)