This randomized controlled trial investigated how breakfast macronutrient composition affects postprandial glucose dynamics and subsequent hunger in 64 overweight but otherwise healthy adults. Participants were assigned to either a high-carbohydrate/low-fat (HC/LF; 55% carbs, 27% fat, 18% protein) or low-carbohydrate/high-fat (LC/HF; 43% carbs, 39% fat, 18% protein) eucaloric diet for 4