Gut bacteria play a crucial role in digestion, providing nutrients while also producing gases like carbon dioxide and methane as byproducts of fermentation. The transformation of chyme into feces occurs as water is absorbed in the large intestine, which is significantly shorter than the small intestine. Interestingly, dietary fiber, primarily made up of complex polysaccharides, remains indigestible for humans, highlighting the unique relationship between our bodies and the food we consume.
