PENGARUH DIET BERBASIS SERAT TERHADAP KEANEKARAGAMAN BAKTERI USUS DAN IMUNITAS TUBUH

Marsyahip

doi:10.55681/aohj.v3i3.514

Authors

Marsyahip Politeknik Sains Gelobal

DOI:

https://doi.org/10.55681/aohj.v3i3.514

Keywords:

Dietary fiber, gut microbiota,, SCFA, bacterial diversity, immune system

Abstract

Modern diets that tend to be low in fiber can trigger an imbalance in the gut microbiota (dysbiosis) which has a negative impact on the immune system. A high-fiber diet is now a focus of attention as a non-pharmacological strategy to maintain the diversity of gut bacteria and improve immunity. Purpose: This literature review aims to examine the effect of a fiber-based diet on the abundance and diversity of gut microbiota and the mechanisms of its impact on the immune system. Methods: This paper uses a literature review method by analyzing various reputable scientific articles published in the last 5–10 years related to fiber diets, gut microbiomes, and the immune system. Results: Consumption of dietary fiber, especially soluble fiber and prebiotics (such as inulin and resistant starch), has been shown to increase the population of beneficial bacteria such as Bifidobacterium and Lactobacillus. Fiber fermentation by gut bacteria produces short-chain fatty acids (SCFAs) such as acetate, propionate, and butyrate. SCFAs play an important role in strengthening the integrity of the intestinal mucosal membrane, stimulating the differentiation of regulatory T cells (Tregs), and suppressing the production of pro-inflammatory cytokines.

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