Nourish Your Body
The Gut-Brain Axis, Explained
The conversation between your gut and your brain runs constantly and in both directions. Here is what that actually means in practice.
The gut-brain axis gets described as though it were a single channel. It is closer to several overlapping ones: neural signalling through the vagus nerve, immune signalling, and metabolites produced by the microbiome.
Fibre is the lever
Short-chain fatty acids produced by bacterial fermentation of fibre are among the best-characterised signals in this system. Diversity of plant fibre matters more than the total gram count on any single day.