The word "longevity" has been having a moment, and I have mixed feelings about it.
On one hand, I'm glad people are thinking earlier about how they want to age. That is exactly the conversation I most want to have. On the other, the version of longevity being sold to us is often unrecognisable from the one that actually works. It's a version made of supplements, gadgets, cold plunges, and an obsession with lowering your "biological age," as though ageing were a number you could game if you simply bought the right things.
The real story is quieter, less profitable, and far more within reach. Healthy ageing isn't something you purchase. It's something you practise. And once you strip away the marketing, what it asks of us turns out to be surprisingly consistent, surprisingly ordinary, and surprisingly doable.
Let me talk about what it actually involves, including for the brain, which is where a good deal of my own interest sits.
The goal isn't more years. It's more function within them.
There's a useful distinction between lifespan, how long you live, and healthspan, how long you stay well, capable, and yourself. Most people, when they picture ageing well, aren't really picturing a number on a birthday cake. They're picturing staying strong enough to do what they love, sharp enough to stay engaged, independent enough to make their own choices, and present enough to enjoy the people around them.
So that's what we're actually trying to protect: function. Physical strength and mobility. Metabolic health. And cognition, memory, focus, mood, and the ability to adapt. Adding years to a life that has lost those things isn't the win the marketing implies. Protecting those things, across whatever years you have, is.
The brain ages too, and resilience is the goal
Here is where my particular interest comes in.
We often talk about ageing as though it happens to the body while the mind simply comes along for the ride. It doesn't. The brain ages like everything else, and a lot of what we shrug off as "just getting older," the foggier days, the slower recall, the shorter fuse under stress, is not as fixed or as inevitable as we assume.
I want to be careful and honest here, because this is a field crowded with overclaiming. I cannot promise you, and you should distrust anyone who does, that a particular routine will prevent dementia. Some of what shapes how our brains age is genetic, and some of it is simply beyond our control. What the evidence does support is more modest and still worth a great deal: many of the same factors that keep the rest of the body well also help the brain stay resilient, and building that resilience earlier tends to serve us better than scrambling to protect it late. [Anya: this is a good place for a reference on modifiable risk factors if you'd like one.]
Cognitive resilience is the aim. Not a guarantee against decline, but a brain with more reserve, more adaptability, and more of what it needs to keep functioning well for longer.
What actually has evidence behind it
Here are the fundamentals. None of them are exciting, and that is rather the point. The unglamorous things are the ones that hold up.
Move, and hold onto your muscle
If I could persuade people of one thing about ageing, it would be this. Muscle is not just for appearance or athletic performance. It's metabolically active tissue that supports blood sugar regulation, mobility, and independence, and we lose it steadily with age unless we give the body a reason to keep it. That reason is resistance: challenging your muscles, in whatever form suits you. Strength work becomes more important as we age, not less, and it's one of the closest things we have to a genuine lever on how well we age. Movement that raises your heart rate matters too, for reasons I'll come to next.
What's good for the heart is good for the brain
Your brain is an extraordinarily hungry organ, entirely dependent on a healthy blood supply. So the state of your cardiovascular system, your blood pressure, your vessels, your circulation, has a direct bearing on how your brain fares over decades. This is one of the reasons I pay attention to cardiovascular health even in people who came to see me about something else entirely. Protecting the vascular system is protecting the brain. [Anya: a reference on vascular contributions to cognitive health would fit well here.]
Keep your blood sugar steady
How your body handles blood sugar over the years is one of the quieter determinants of how you age, for both metabolic and cognitive health. Persistent dysregulation puts strain on many systems at once. The foundations here are the same ones that show up everywhere in this article: how and what you eat, how you move, and how you sleep.
Treat sleep as non-negotiable
Sleep is not downtime, and it is not a luxury to be traded away. During deep sleep, the brain appears to clear metabolic waste more effectively than it can while we're awake, among many other restorative processes, and the details of this are still being actively researched. [Anya: reference for brain clearance during sleep if you want one.] What isn't in doubt is that chronically poor sleep undermines nearly everything else on this list. If you fix only one thing, this is a strong candidate.
Eat in a way you could sustain for decades
I'm wary of prescriptive diets, and I won't hand you numbers here. But the broad pattern that keeps showing reasonable support for both heart and brain is unremarkable: mostly whole foods, plenty of plants and fibre, enough protein to help hold onto muscle as you age, and healthy fats. A Mediterranean-style pattern is the version of this that has been most studied, and it's a sensible reference point rather than a rulebook. [Anya: cite a dietary-pattern reference here if you'd like.] The best diet for ageing is one that's nourishing and that you can actually live on.
Stay connected, and stay interested
This one gets left off the list far too often, and it shouldn't be. Meaningful social connection and a sense of purpose are not soft extras. Loneliness and disengagement are real risks to how we age, including cognitively, while staying socially and mentally engaged helps keep the brain challenged and supported. Learning, conversation, being needed, and being known all count as brain care. So do the relationships you tend to.
Take chronic stress seriously
Short bursts of stress are part of a healthy life. It's the unrelenting, years-long kind that wears systems down, from the cardiovascular to the cognitive. Building in genuine recovery, the nervous system spending real time out of fight-or-flight, is part of ageing well, not a reward for it.
What we can't control, and letting that be okay
I want to say this plainly, because the longevity conversation can quietly turn into a source of guilt.
You did not choose all of your genes. You cannot control every exposure, every illness, or every hard season life hands you. Some of how we age is luck, and some of it is simply beyond reach. None of the fundamentals above are guarantees. They are ways of stacking the odds in your favour, and stacking the odds is worth doing, but it is not the same as buying certainty.
So please don't read any of this as a moral test you can pass or fail. The goal is not perfection or control. It's giving your future self a better chance, while being kind to your present self along the way.
On supplements and "hacks"
People often expect a naturopath to lead with supplements here, so let me be direct.
The foundations come first, always. No supplement, no device, and no protocol outperforms the basics of movement, sleep, food, connection, and cardiovascular and metabolic health. A great deal of what gets marketed under the longevity banner is either unproven in humans or wildly oversold, and some of it is expensive theatre. That doesn't mean targeted supplementation never has a place. Sometimes it genuinely does, to address a specific deficiency or need identified properly. But it earns its place by fitting your particular picture, not by appearing in a headline. [Anya: add your own positioning or references here as you see fit.]
Never too early, and rarely too late
Two kinds of people tend to bring this up with me.
The first are thinking ahead, still feeling well, and want to protect what they have. To them I say: wonderful, and yes, earlier is genuinely better. The reserve you build now is reserve you get to draw on later, and few of these habits are easier to start at seventy than at forty.
The second have already noticed changes, in their focus, their memory, their energy, their resilience, and worry they've missed the window. To them I say something just as true: it is rarely too late to change the trajectory. Bodies and brains remain responsive to how we treat them across the whole of life. The aim shifts from prevention toward protection and support, but the fundamentals barely change, and meaningful improvement is often still very much on the table.
What it comes down to
Healthy ageing doesn't ask us for anything exotic. It asks for consistency in a handful of unglamorous things, sustained over a long time. It asks us to move, to sleep, to eat well enough, to stay connected, to protect the heart and the mind together, and to keep some genuine recovery in our lives. And underneath all of it, it asks us to treat our future self as a real person worth looking after.
That's not a product. It's a practice. And it's one you can start, or restart, today.
This article is general in nature and isn't a substitute for individual medical or naturopathic advice. If you have concerns about your health or how you're ageing, please see a practitioner who can assess your full situation.