Pancreas volume increases with obesity. Insulin acts as a trophic factor on the exocrine pancreas. Inflammatory changes in the exocrine pancreas may affect endocrine function and/or mass. Abbreviations: BCM – beta-cell mass, CCK – cholecystokinin, ER – endoplasmic reticulum, FFA – free fatty acid, GI – gastrointestinal, T2D – type 2 diabetes.