What Cognitive Function Means

What if 70% of cognitive decline is optional — and you've been told the wrong story about aging?

In this episode, I sit down with Dr. Tommy Wood — neuroscientist, performance researcher, and author of The Stimulated Mind — to dismantle the myth that brain decline is inevitable. Dr. Wood reveals why most people are treating their brains like trucks when they should be treating them like Formula One cars — and how that mindset shift changes everything.

We unpack the truth about cognitive function: it doesn't have to decline. Studies show that for most people, brain performance can stay stable from your 50s into your 80s and beyond. But here's what no one is saying: the average decline we see is driven by a minority of people who experience severe deterioration — not the majority. That means the trajectory you're on is largely within your control.

Dr. Wood breaks down his 3S Model for Brain Health — Stimulus, Supply, and Support — a framework that simplifies the overwhelming noise around brain optimization. We discuss why retirement accelerates cognitive decline by 40%, how resistance training protects white matter and executive function, why being unkind to yourself creates chronic inflammation that accelerates dementia risk, and the shocking role of allostatic load in brain aging.

This conversation will change how you think about your brain. It's not about doing 40 things perfectly. It's about understanding the core mechanisms — and making strategic changes that shift the entire system in your favor.

About the guest:

Dr. Tommy Wood is a neuroscientist, performance researcher, and author of The Stimulated Mind. He holds a PhD in physiology and neuroscience from the University of Cambridge and an MD from the University of Oslo. Dr. Wood has worked with Formula One drivers, elite athletes, and high performers across industries to optimize brain health and cognitive longevity. His work focuses on translating cutting-edge neuroscience into actionable strategies for peak performance and dementia prevention.

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I'm Louisa Nicola — clinical neurophysiologist — Alzheimer's prevention specialist — founder of Neuro Athletics.

My mission is to translate cutting-edge neuroscience into actionable strategies for cognitive longevity, peak performance, and brain disease prevention.

If you're committed to optimizing your brain — reducing Alzheimer's risk — and staying mentally sharp for life, you're in the right place.

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Topics discussed:
00:00:00 Introduction: The Cognitive Decline Choice 00:08:38 The Supplement Myth: Why 500 Dollars a Month Wo

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