Gut-Brain Axis
Signals between the gut and the brain run through the vagus nerve, immune pathways and microbial metabolites such as butyrate.
The holdings here range from dysbiosis and leaky gut to probiotics and at-home microbiome tests, a market full of confident promises. We trace each claim to the research and grade the hype accordingly.
newest 19 Aug 2026
Most read here · Trend breakdown
Fermented Foods and Gut Health: Do They Really Beat Fibre? →
Editor's Pick · Gut-Brain Axis
Gut-Brain Mastery: The Evidence-Based System for Optimising Your Microbiome
You track your macros, optimise your sleep, and periodise your training, but you have probably never deliberately shaped the microbial ecosystem that influences whether your prefrontal cortex fires efficiently, whether your stress response stays calibrated, and whether your immune system supports or undermines your cognitive output.
Guide · 13 chapters · 84 min read · 19 Aug 2026
A route through this shelf
Reading order
Measure yourself
Gut-Brain Diet Self-Reflection: How Does Your Plate Match the Research?Get a baseline before you change anything. 20 questions; scored on real dimensions.
Read the evidence
Gut-Brain Mastery: The Evidence-Based System for Optimising Your MicrobiomeThe full argument, chapter by chapter.
Check the hype
At-Home Microbiome Tests: Is the Gut Kit Worth It?Gut diversity is a real health marker; at-home test results are unreliable and unfit for clinical decisions.
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Holdings
Assessments
Scored self-assessments with real question banks.
Trend Breakdowns
Claims from the feed, checked against their sources.
At-Home Microbiome Tests: Is the Gut Kit Worth It?Gut diversity is a real health marker; at-home test results are unreliable and unfit for clinical decisions.4 sources scored · 2 Aug 2026- Fermented Foods and Gut Health: Do They Really Beat Fibre?Raises gut diversity in trials; fibre alone can match it; the two work better together than apart.4 sources scored · 2 Aug 2026
Glossary
Defined terms, each with its own entry.
Dysbiosis: Definition and Why It Has No Agreed Diagnostic ThresholdDysbiosis is a disrupted gut microbial state with no agreed diagnostic threshold, linked to mood but not yet reliably tested for in clinical practice.Glossary term · 2 Aug 2026
Butyrate: Definition and the Short-Chain Fatty Acid Linking Fibre to the BrainButyrate is the short-chain fatty acid gut bacteria make from fibre, fuelling colon cells and shaping mood through the gut-brain axis.Glossary term · 2 Aug 2026
Probiotics: Definition and What the Evidence Actually SupportsProbiotics are live microorganisms that confer health benefits when taken in adequate amounts. Learn what the science actually supports, strain by strain.Glossary term · 18 Jun 2026
Prebiotics: Definition and the Bacterial-Food Versus Bacterial-Population DistinctionPrebiotics are non-digestible dietary substrates that selectively stimulate beneficial gut bacteria, producing short-chain fatty acids including butyrate.Glossary term · 18 Jun 2026
Microbiome: Definition and the 39-Trillion-Cell Internal EcosystemThe microbiome is the full community of microorganisms and their genes living in the human body, governing digestion, immunity, and gut-brain signalling.Glossary term · 18 Jun 2026
Leaky Gut: Definition, Mechanism, and What the Evidence ShowsLeaky gut is the colloquial term for increased intestinal permeability. Learn the mechanism, associated conditions, and what the evidence says about diet.Glossary term · 18 Jun 2026
Gut-Brain Axis: Definition and the Vagus-Mediated Communication SystemThe gut-brain axis links gut and brain via the vagus nerve, enteric neurons, and microbiota, shaping mood, cognition, and stress responses.Glossary term · 18 Jun 2026
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Most read on this shelf
- Fermented Foods and Gut Health: Do They Really Beat Fibre?Trend breakdown
- PrebioticsGlossary term
- Gut-Brain AxisGlossary term
- ButyrateGlossary term
- DysbiosisGlossary term