Interaction of protein and carbohydrate in the regulation of food intake and postprandial glycemia. Glucose control by carbohydrate is shown in red. Glucose control by protein is shown in green. AMPK, AMP-activated protein kinase; CCK, cholecystokinin; DPP-IV, dipeptidyl peptidase-4; GIP, gastric inhibitory peptide; GLP-1, glucagon-like peptide; PYY, peptide YY.