Undigested food in stools can have various causes, just like most other symptoms. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose undigested food in stools, we could:
Have you noticed undigested food in your stools, other than corn?
Possible responses:→ No / don't know