 Oh, no. Stomach issues again? Stomach issues? Who are you? Your pancreas. I could be the real reason for your diarrhea, gas, bloating, stomach pain, or loose oily stools. I thought it was my stomach. People often do. But any of these symptoms could mean having a condition called exocrine pancreatic insufficiency, or EPI. With EPI, the pancreas doesn't release enough enzymes to break down food. But EPI is manageable. Use the symptom checker on identifyepi.com and speak with your doctor. That's identifyepi.com. Sponsored by Exocrine.