Snapshot · The Diary Of A CEO with Steven Bartlett
Indigenous groups like the Hadza hunter-gatherers in Tanzania and Yoruba in Nigeria have exceptionally rare Alzheimer's and vascular dementia, pointing to Western diet and lifestyle as key drivers.
Where this was said
At 1:18:33 · chapter starts 1:11:30
The amyloid plaque hypothesis of Alzheimer's, Picard says, is simply not correct — and the evidence is clinical: people with zero plaques have full dementia, and people drowning in plaques have normal cognition. What actually happens, he argues, is that specific brain regions first burn too much energy (hypermetabolism — the cell struggling to compensate), then exhaust themselves into burning far too little (hypometabolism — the cell failing). This mirrors exactly what happens in muscle during diabetes. The term 'type 3 diabetes' captures this: the brain becomes resistant to glucose just as muscles do, starving neurons of the fuel they need to form memories, regulate mood, and plan. Ketones sidestep this problem because their pathway into brain mitochondria is shorter and lower-friction than glucose. Indigenous populations like the Hadza and Yoruba, who eat minimal sugar and move constantly, have vanishingly rare Alzheimer's — the epidemiological fingerprint pointing squarely at Western diet and lifestyle as the primary drivers.
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