what causes undigested food in stool?
<answer> Diarrhea and eating a high fiber food such as green leafy vegetables. <context> A lot of reasons can cause undigested food in stool. It is usually not a health problem unless accompanied with diarrhea and other disease such as disease in the digestive system. Another reason for stool to have undigested food is when eating a high fiber food such as green leafy vegetables.