One possibility is Exocrine Pancreas Insufficiency (EPI) where the pancreas is producing less digestive enzymes required for digestion so vitamins and nutrients can be absorbed through the intestine. As we age, the pancreas can undergo atrophy resulting in decreased function. The fecal,elastase test is used to determine if their is an insufficiency of the pancreatic enzymes amylase, lipase and protease. If found to be low, supplemental enzymes can be taken to restore digestive function.