Metabolic Nutrition

Yes — specific fermentable fibers, particularly resistant dextrins, inulin-type fructans, and mixed-linkage beta-glucans, reliably elevate postprandial GLP-1 by 20–40% above baseline in controlled trials, co-secreting PYY and reducing ad libitum energy intake by 5–10%. The effect is fiber-type dependent, dose-dependent, and mechanistically rooted in colonic SCFA production rather than direct mucosal contact.