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The Genius Life · August 13, 2025 · 74m
The Science of Preventing Cognitive Decline
Tommy Wood on the neuroscience of cognitive decline: it starts 20-30 years before symptoms. Metabolic health, sleep, exercise, and social connection are the four pillars of brain protection. Why IQ is less important than metabolic flexibility for long-term brain health.
This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.
Canon
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Wood's research shows brain glucose metabolism declines 20-30 years before Alzheimer's symptoms appear, creating a decades-long intervention window that current medicine almost entirely ignores.
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Wood presents evidence that social isolation is as significant a risk factor for dementia as physical inactivity, and that strong social bonds provide measurable cognitive reserve.
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