A growing body of scientific research indicates that imbalances in the gut microbiota are associated with chronic health conditions such as diabetes, metabolic syndrome, obesity, and irritable bowel syndrome. To treat these health conditions, imbalances in the gut microbiota must be corrected. One way to accomplish this is by selectively feeding beneficial gut bacteria with prebiotics. Prebiotics are carbohydrates that are indigestible to humans and reach the colon intact, where they serve as fuel for gut bacteria. Read on to learn about resistant starch, one special type of prebiotic fiber that has demonstrated great potential in the treatment of metabolic, digestive, and immune system disorders.