Brain Bran: The Hidden Power of Fibre in Cognitive Health
Discover the gut-brain connection: how high-fibre diets produce butyrate to shield the brain from dementia and cognitive decline.
By: AXL Media
Published: Mar 30, 2026, 6:20 AM EDT
Source: BBC new
The Gut-Brain Axis: How Fibre "Talks" to the Brain
Fibre is a carbohydrate that resists human digestive enzymes, arriving in the large intestine mostly intact. There, it serves as the primary fuel for the gut microbiome.
The Butyrate Effect: As bacteria ferment fibre, they produce short-chain fatty acids, specifically butyrate.
The Protective Shield: Butyrate strengthens the intestinal wall, acting as a barrier that prevents pro-inflammatory markers from entering the bloodstream and reaching the brain.
Cognitive Retention: Studies show that higher butyrate production is directly linked to better sleep, improved mood, and a lower risk of dementia.
Measurable Impacts on Mortality and Aging
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