Mixed
Short-chain fatty acids (SCFAs), particularly butyrate, acetate, and propionate, produced by gut microbiota fermentation of dietary carbohydrates, provide significant caloric energy to the host and exert anti-inflammatory effects by promoting intestinal epithelial integrity and inducing regulatory T cells.
Prioritize dietary fibers and complex carbohydrates that reach the colon, as these are fermented by gut bacteria into short-chain fatty acids (SCFAs) like butyrate. These SCFAs are not just waste products; they provide about 10% of your body's energy needs, strengthen your gut lining, and help regulate inflammation. A diverse diet rich in fibers supports this beneficial microbial activity.
SCFAs contribute approximately 10% of the caloric content required by the human body for optimal functioning... Butyrate is the most preferred source of energy in this respect; its consumption improves the integrity of IECs by promoting tight junctions, cell proliferation, and increasing mucin production by Goblet cells... Butyrate also exhibits anti-inflammatory effects, through stimulating both IECs and antigen presenting cells (APCs) to produce the cytokines TGF-β, IL-10, and IL-18, and inducing the differentiation of naïve T cells to T regulatory cells
Why this rating
This is a review paper citing multiple primary studies and established physiological mechanisms, though specific clinical trial data for general population supplementation is not the primary focus.
Source
Macronutrient metabolism by the human gut microbiome: major fermentation by-products and their impact on host health
Kaitlyn Oliphant et al. · Microbiome · 2019
DOI 10.1186/s40168-019-0704-8
More from this paper
- Excessive protein fermentation by gut microbiota can produce toxic metabolites such as hydrogen sulfide, ammonia, and certain amines, which may damage the intestinal epithelium, promote inflammation, and are associated with diseases like inflammatory bowel disease (IBD).Good
- Propionate, a short-chain fatty acid produced from carbohydrate fermentation, can inhibit the conversion of acetate to cholesterol and fat, potentially reducing intra-abdominal tissue accretion and intrahepatocellular lipid content in overweight adults.Moderate
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