Following the BRAT diet can provide a couple of benefits for those people who are experiencing diarrhea or an upset stomach. Firstly, all foods in this diet are typically low in fiber, bland, and starchy. That is why they can allow for the binding of runny and loose stools. Since these foods are also low in protein and fat, they would reduce the risk of irritating the stomach and alleviate pressure on your digestive system. In addition, a BRAT diet can help prevent vomiting or nausea thanks to the bland flavors of included foods and absence of strong smells.