Exocrine pancreatic insufficiency (EPI) causes clay-colored, greasy stools that smell foul. A stool test to check for low levels of the elastase enzyme can help diagnose the condition. The pancreas ...

Stool may be pale or white due to dietary choices, an infection, or an underlying medical problem such as gallbladder or liver disease. People with persistently pale stools may need medical treatment.

Increasing fiber and staying hydrated can help treat constipation, which can cause thin stools. Hemorrhoids can cause narrow stools and might require more water and fiber to relieve symptoms. Check ...