Dietary Fibre and Brain Function

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The book explores the relationship between dietary fiber and colonic archaeal growth, suggesting that fiber deficiency enhances archaeal endosymbiosis, which may lead to "neanderthalisation" of the human brain. It discusses how modern diets low in fiber and high in saturated fats contribute to cognitive disorders and changes in brain structure, particularly affecting the cerebral cortex and cerebellum. In contrast, higher fiber intake is linked to reduced archaeal density and supports the evolution of Homo sapiens, highlighting the significant impact of diet on human health and development.