Definition
Microbial metabolites are the small molecules produced by gut microbes — including short-chain fatty acids, neurotransmitter precursors, and immune-modulating compounds — that influence gut, immune, and brain function.
Why it matters
These metabolites are one of the most concrete mechanistic bridges between diet, microbiome, and health outcomes.
The Science
Short-chain fatty acids like butyrate, acetate, and propionate influence gut barrier integrity, immune tone, and systemic metabolism. Microbes also modulate tryptophan metabolism, bile acids, and neuroactive precursors.
The NSI Perspective
NSI treats these metabolites as part of the language between systems — real, measurable, and modifiable through consistent inputs.
Clinical Implications
Consistent dietary patterns supporting metabolite production (fiber diversity, minimally processed foods) are better supported than most branded interventions.
Practical Application
Boring, consistent, plant-rich eating supports these metabolites. Trend diets rarely do.
References
- 1.Koh A, De Vadder F, Kovatcheva-Datchary P, Bäckhed F. From dietary fiber to host physiology: short-chain fatty acids as key bacterial metabolites. Cell. 2016;165(6):1332–1345.