Prebiotics are a special form of dietary fiber that act as fertilizers to help stimulate the growth of good bacteria already in the gut. Unlike probiotics, which are live good bacteria, prebiotics act as the food for the good bacteria in your gut. Consuming more prebiotics will cause the good bacteria in your gut to thrive, aiding digestion, reducing bloating and achieving a flatter stomach fast. Researchers believe prebiotics produce fatty acids in our bodies, which are thought to increase levels of GLP 1, a hormone found in the intestines. The more GLP 1 we have, the less hungry we feel, thus leading to weight loss.