Super Agers: An Evidence-Based Approach to Longevity

I read the two big recent longevity books back to back - Peter Attia's Outlive and Eric Topol's Super Agers. Both are chasing more good years rather than just more years on the clock – healthspan over lifespan. An important distinction. Modern medicine has become brilliant at delaying death but poor at preventing the slow but brutal decline that fills the last decade or so of most lives.

They start from the same diagnosis and end up in similar places on most topics - though I was left with a clear preference in trust between the two. On that question, Topol wins by a clear margin. But Attia has a more coherent story (maybe due to a ghost-writer!) - one with a clear framing, excluding the final chapter it is a decent book if read with a critical eye.

The shared diagnosis

Both books are built on the same foundation, and it's a vital one. We have a medicine that's superb at acute firefighting – germ theory, surgery, emergency care – and weak at the slow killers that actually end most of us. Attia calls this Medicine 2.0 and argues for a "Medicine 3.0" that is proactive, preventative, and works on a long time horizon. You stop being a passenger on the boat and start captaining it. It's the strongest idea in either book.

Both also agree on the targets. Attia's "four horsemen" – heart disease, cancer, neurodegeneration, and metabolic disease (type 2 diabetes) – are exactly Topol's "big four". And both make the same uncomfortable point: by the time you're formally diagnosed, you're at the last stop on a line that started years earlier. A type 2 diabetes diagnosis is an arbitrary threshold on a road you've been travelling for a decade or more. "Normal" results in a sick society are not the same as optimal results.

Where they agree

Exercise is the only real miracle drug. Neither hedges on this. Both bring data to the party. Attia's big line being that below the 50th percentile for VO₂ max carries a worse all-cause mortality risk than smoking. Topol calls it the one intervention that improves markers right across the body. And there's little or no ceiling - the benefits keep coming at any age and almost any dose. Attia's "Centenarian Olympics" idea is the practical version: decide what you want to be physically capable of at 90, then reverse-engineer the training now. This is the source of my world record attempt. Don't forget stability and strength, not just cardio. Falls kill the elderly, and most people never train for balance at all.

Catch the killers early. Both are bullish on cancer immunotherapy and, increasingly, AI-assisted diagnosis. The goal is to make cancer a treatable nuisance by finding it early rather than a grim emergency found late.

The diet evidence is a mess. This surprised me from two doctors, but both are honest that nutritional epidemiology tells us very little with confidence, and that diet has to be personalised. The one firm instruction they share, drop the ultra-processed food. Topol is especially good here, framing UPFs as "not food" stuff where chemical and physical processing has changed the actual nature of what you're eating.

Where they split

This is where Topol takes direct aim at Attia.

The protein fight. Attia pushes high protein hard. Topol calls him out by name, walks through the leucine studies and the gaps in the evidence, and is far more sceptical. Watching one bestseller argue with another in real time is useful – it's the closest a lay reader gets to seeing where the consensus actually is (nowhere settled, is the answer, but I found Topol far more convincing with the actual evidence and writing from a less incentivised position).

Evidence standards. Topol is scrupulous about flagging when the data is thin. Taurine, supplements, young blood in mice, stem cells - he's hopeful but clear that we don't yet know. Attia is more confident, more self-experimental, and more willing to run ahead of the evidence. This is part of his "Medicine 3.0" toolkit and similar to the work Bryan Johnson does on himself, but for me while intrigued I am not yet ready to make significant medical interventions yet.

Environmental factors. Topol devotes real space to plastics, air quality, and chemical exposure as drivers of poor outcomes. Attia largely skips this, which feels like a notable gap.

The trust question

Topol went looking for a genetic explanation for exceptional healthspan – his "wellderly" work. He did the original research himself, and didn't find one. That's good news for the rest of us as it means the super-agers weren't genetic lottery winners so much as more educated, leaner, more active, and noticeably more upbeat people (optimism for the win again!). He's bullish where the evidence earns it (GLP-1 drugs as a genuine wonder, gene therapy for the rare diseases that are ~80% genetic in origin, the gut microbiome, the spectacular success of vaccines), and he's honest where it doesn't. He even turns the lens outward, warning that the anti-science political climate is becoming our own worst enemy. He's clearly a good-faith guide.

Attia is murkier. The relentless self-optimisation, the supplement enthusiasm, and the commercial machine around the brand (he sells both high-end medical care to the rich, and products to anyone) all make me read him with one eyebrow raised. This is before we talk about the wild final chapter where he discusses a 'mental breakdown' that he suffered while skipping attending his sick child - one that now seems directly linked to Jeffrey Epstein and his parties. Outside the controversy he did land the best framework in either book, and a lot of his advice is solid and immediately usable. Medicine 3.0, the primacy of exercise, even the eulogy-virtues-over-résumé-virtues section on emotional health, the proactive case as a whole. If Topol is the doctor I'd trust, Attia is the one who handed me the easier mental model.

A fair warning on Topol's writing, it is more technical and he doesn't dumb things down, which is admirable but occasionally heavy going for a non-medical, non-American reader. He also jumps from study to study a fair bit. It's the price of the rigour.

The verdict

Both have strengths, but read them differently. Take Attia for the framework – Medicine 3.0, the four horsemen, and the case that exercise is the closest thing we have to a drug worth taking. Take Topol for the judgement on what the evidence actually supports right now, and trust him further when they disagree. Listen to his podcast for modern medical news, skip Attia's - I would have said this even before the controversy.

If you only read one, read Super Agers.

Outlive – 3/5 The better map, it is easy to follow at least until the end, but drawn by a guide I'd double-check. Super Agers – 4/5. More technical, more honest, less flow but the one I'd hand a friend.

And the punchline both books arrive at is simple - move a lot, sleep properly, eat real food, stay connected to people, and start now rather than at the diagnosis. As I like to say if I'm not killed by stupid people or smart machines, I intend to be in the gym at 100.