Changes in Stool Color - Pale yellow, greasy, foul-smelling stool: malabsorption of fat due to pancreatic insufficiency, as seen with pancreatitis, pancreatic cancer, cystic fibrosis, celiac disease. ... Clay-colored stool: lack of bile due to blockage of the main bile duct.
Problems with the pancreas can affect the whole body. If the pancreas does not produce enough digestive enzymes, for example, food will not be properly absorbed... more