Inulin is a type of soluble fiber found in certain plants, particularly in the roots or rhizomes of vegetables like chicory, Jerusalem artichokes, and onions. It's a polysaccharide, meaning it's made up of multiple sugar molecules. Despite being a carbohydrate, inulin is not digested or absorbed in the small intestine like most sugars. Instead, it travels to the colon, where it serves as a prebiotic, nourishing beneficial bacteria in the gut. This fermentation process produces short-chain fatty acids, which offer various health benefits, including improved digestion, enhanced immune function, and potentially even lowering the risk of certain diseases like colon cancer.