What happens if the digestive system fails?

U can die , maybe.: Seriously speaking, failure of GI tract is uncommon unlike that of the kidney, heart, lungs and brain. Most GI conditions are related to infection, inflammation, bleeding and ulcers and u usually recover from these and won't cause GI crash or failure. Best wishes! http://digestive.Niddk.Nih.Gov/ddiseases/pubs/yrdd/http://m.Healthline.Com/symptom/gastrointestinal-bleeding.