
Gut fuel for sharper thinking: how fibre protects the brain
A BBC health feature explains that dietary fibre boosts gut bacteria and their production of butyrate, which supports brain health and may reduce dementia risk. Reaching about 25–30g of fibre daily from wholegrains, fruits, pulses, nuts and seeds is associated with lower mortality and better cognitive outcomes, though some studies show correlations rather than proven causation. Practical tips include swapping white for wholegrain foods, adding legumes and vegetables to meals, snacking on nuts and seeds, and considering supplements if needed; fibre remains a key, often under-consumed, nutrient with potential brain benefits.












