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Fermentable Fibers

Meaning

Fermentable fibers are a type of dietary carbohydrate that resists digestion in the upper gastrointestinal tract but is readily metabolized by the resident microbiota in the large intestine. These fibers, which include prebiotics like inulin and fructans, are critical components of a healthy diet, supporting the diversity and function of the gut microbiome. Their fermentation yields beneficial short-chain fatty acids (SCFAs), which have far-reaching systemic effects relevant to hormonal balance and metabolic wellness. Examples of fermentable fibers are found in legumes, oats, and various fruits and vegetables.