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The Diary of a CEO with Steven Bartlett · August 7, 2026 · 30m

Most Replayed Moment: Alzheimer's Starts 20 Years Before Symptoms! How To Protect Your Brain Now

Neurophysiologist Louisa Nicola discusses the decades-long preclinical window of Alzheimer’s disease and the evidence that exercise is one of the most powerful interventions for preserving brain health. She explains why grip strength may serve as a practical marker of cognitive resilience, and describes a specific training approach that produces striking adaptations in the aging heart.

This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.

Highlights

Alzheimer’s disease pathology starts up to 20 years before the first cognitive symptoms appear.
The right kind of exercise is one of the most effective strategies for protecting the ageing brain from decline.
Grip strength as a marker of cognitive health
One often-overlooked measure of physical strength—grip strength—may be a powerful marker of cognitive health.
A specific training approach can produce remarkable changes in the middle-aged heart.
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