Mixed
Dietary non-digestible carbohydrates (fiber) serve as the primary carbon source for gut bacteria, and their fermentation into short-chain fatty acids (SCFAs) like butyrate regulates mucosal immune homeostasis by influencing T-cell differentiation and barrier integrity.
Prioritize non-digestible carbohydrates (fiber) from diverse plant sources as your primary fuel for gut bacteria. This fermentation process produces short-chain fatty acids like butyrate, which are critical for maintaining the intestinal barrier and regulating immune cells (Tregs and Th17). A lack of fiber leads to reduced bacterial diversity and increased susceptibility to inflammation.
Generally, the primary nutrient source for the gut bacteria is non-digestible dietary carbohydrates (NDC)... The fermentation of NDC by bacteria leads to the production of short-chain fatty acid (SCFA), mainly acetate, propionate and butyrate.
Why this rating
This is a review paper summarizing multiple studies; while the mechanism is well-established in the literature cited, it is not a primary clinical trial.
Source
Nutrients Mediate Intestinal Bacteria–Mucosal Immune Crosstalk
Ning Ma et al. · Frontiers in Immunology · 2018
DOI 10.3389/fimmu.2018.00005
More from this paper
- Specific bacterial metabolites, particularly short-chain fatty acids (SCFAs) like butyrate and polysaccharides like PSA, directly modulate adaptive immunity by promoting Treg differentiation and suppressing pro-inflammatory Th17 responses.Moderate
- Deficiencies in pattern recognition receptors (TLRs and NLRs) or their signaling pathways lead to dysbiosis, impaired mucosal barrier function, and increased susceptibility to inflammatory bowel disease (IBD) and metabolic syndrome.Moderate
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