A low-fiber/low-residue diet is a type of eating plan that is used by people who have certain medical conditions. It means eating foods that contain very little or no fiber and foods that leave very little residue in your digestive system, like liquid and soft foods. This can help reduce problems like diarrhea or constipation and help your digestive system stay healthy. Fiber is found in whole grains, fruits, and vegetables, so when you're eating a low-fiber diet, you will look more for meat, dairy, and processed foods that don't have much fiber. It is important to talk to a doctor before starting any special diet.