Free deep dive · 31 pages
The Gut-Brain Microbiome
How microbes, metabolites and neuroimmune signalling are reshaping the future of brain health science
The gut-brain axis has moved from a vague wellness idea to a mechanistic field. This deep dive maps the network that links intestinal microbes, their metabolites, the immune system, the enteric nervous system, the vagus nerve and the brain.
It is written to help healthcare professionals explain the science clearly, validate what patients describe without over-medicalising it, and recognise when standard psychiatric, neurological or medical care must come first.
Inside this deep dive
- The five gut-brain communication channels: neural, immune, endocrine, metabolic and barrier-mediated
- Why the vagus nerve is important, but not the whole story
- Microbial metabolites as the chemical language between gut and brain
- Common gut-brain claims, and what the evidence actually supports
- A patient-facing question and answer guide for the consultation
Written for healthcare professional education and free for anyone to read. It is general education, not medical advice or a treatment guideline. Speak to a healthcare professional about your own symptoms.
Prefer a shorter read? Understanding IBS covers the essentials in plain language.



