What role do prebiotics play in supporting the human microbiome?

Prebiotics are non‑digestible fibers that reach the colon intact and serve as food for healthy gut bacteria. By feeding beneficial microbes, prebiotics encourage these bacteria to grow and multiply, which strengthens the microbial community and improves its balance. This selective stimulation helps the microbiome produce short‑chain fatty acids that nourish colon cells and boost the immune system. For example, eating foods high in inulin, like chicory root or bananas, gives the friendly bacteria in your gut a boost, leading to better digestion and a lower risk of inflammation. Thus, prebiotics act as a natural fertilizer for the gut’s microbial garden, keeping it diverse, active, and protective.