Why I'm Taking Longevity Seriously

I've become that guy who's a bit obsessed with longevity. It started as idle curiosity — I went looking into how we actually age, fell down a rabbit hole of studies and stats, and never really climbed back out. I'm a geeky sort, so once something has my attention I want to understand it properly. And the more I read, the more I thought: why isn't everyone paying attention to this?

So I figured I'd write it down as I go. Let me start with what longevity even means to me, because I don't think it means what most people assume.

What longevity actually means

When people hear "longevity" they picture living to 100, or some Silicon Valley billionaire trying to hack his way to 200. That's not it for me. Longevity isn't just about adding years — it's about the quality of the years you add. Living long and living well, at the same time.

And here's the thing that got me: we're already winning the "living long" part. A century ago, average life expectancy was somewhere in the 30s and 40s. Today it's around 70 globally, and low 80s in a lot of developed countries. We've added decades. The problem is what those extra decades actually look like.

Healthspan: the years worth having

There's a word for this: healthspan. Your lifespan is how long you live. Your healthspan is how long you stay healthy — active, sharp, able to do the things you enjoy without your body holding you back.

And there's a gap between the two. On average, people spend roughly the last decade of life in poor health — managing chronic conditions rather than living freely. So you might get to 80, but the last 8 or 10 of those years aren't exactly the good times. What really got me is that a huge share of what drives that — heart disease, type 2 diabetes, a lot of it — is heavily influenced by everyday stuff we can actually do something about. It's not all fixed at birth.

That reframed the whole thing for me. The goal isn't just more years. It's closing that gap — pushing healthspan as close to lifespan as I can, so the extra time is time worth having.

Wealthspan: the half nobody mentions

Then there's the part I think gets left out of most longevity chat: money. Because living a long, healthy life is great right up until you run out of cash to actually enjoy it.

That's your wealthspan — how long your money lasts, and whether it keeps up with a longer life. And it's a real problem: if we're all living into our 80s and beyond, our savings have to stretch a lot further than previous generations planned for. Being fit and broke at 85 isn't the dream either.

So for me, longevity is really two things sitting side by side: healthspan and wealthspan. Keep your body going, and keep your bank account going. Living long and well means winning on both.

Why I'm bothering

So that's why I'm taking this seriously — not in a panicked way, just deliberately. I'd rather work on it now, while I'm young and it's easy, than wish I'd started earlier.

And I've decided to do it in the open. I'm going to write about what I'm actually doing — the training, the food, the numbers worth watching, the money side, the tools I'm using — and what I'm learning as I go. Partly to keep myself honest, partly because if it nudges even one person to start sooner than they would have, that's a win.

This is the first post. Plenty more to come. If you're anything like me — feeling fine now, but sensible enough to know "fine" doesn't last forever — I hope some of it's useful.