What the world's top longevity experts want you to know

We spent the weekend at the Healf Summit alongside some of the most respected names in longevity science: Andrew Huberman, Rhonda Patrick, Gary Brecka, Kayla Barnes, Max Lugavere and more. The conversations ranged from gut health and nutrition to inflammation, personalised medicine, and the latest in cellular biology.

It was a remarkable gathering. But what stood out most wasn't the cutting-edge technology or the supplement science. It was three themes that kept surfacing across every talk and every conversation. And they were, in many ways, a call back to basics, backed by the evidence to support them.

1. Most people don't need more biohacks. They need better fundamentals.

Walk into any longevity event and you'll find discussions about red light therapy, continuous glucose monitors, and peptide stacks. The Healf Summit had all of that. But the most consistent message was: most people don't need to do more, they need to do the basics better.

Sleep. Exercise. Nutrition. Nervous system regulation.

Every expert, regardless of their specialism, kept returning to the same foundations. And the research backs this up. A large 2025 population cohort study drawing on over 100,000 UK Biobank participants found that modest concurrent improvements across sleep, physical activity, and diet were associated with up to four additional years of healthy life. Not dramatic overhauls. Small, consistent improvements across multiple areas, combined, were enough to move the needle on healthspan in a meaningful way.

The takeaway isn't that advanced tools don't have a place. It's that they work best when the foundations are solid. Before layering anything on top, sleep, movement, and nutrition should be the priority.

2. Learn the principle, not just the protocol.

Dr Andrew Huberman was among those who stressed something we think is genuinely underrated in the health space: understanding the scientific principle behind an intervention, not just blindly following someone else’s protocol.

With an ever-increasing list of tools and products available, it's difficult to know whether it applies to you, or whether it's worth your time at all. By understanding the scientific principle, the underlying biological logic that makes an intervention work you can evaluate any new tool or trend clearly.

Red light therapy is a good example of this. The biological principle behind red light panels is that certain wavelengths of light stimulate the mitochondria, the energy-producing units inside your cells, helping them work more efficiently. Resulting in more energy and powering recovery. The interesting thing is that natural sunlight contains those same red and near-infrared wavelengths, morning and evening sun in particular is rich in them. So while a red light panel can be a useful tool, especially through winter months or for those with limited time outside, understanding the principle behind it reveals that getting outside in natural light every day is already working with the same biology, for free.

3. Personalised health starts with personalised data.

Of all the talks at the summit, this was the theme Kayla Barnes articulated most compellingly, exploring why it is critical to understand your own biology and what healthy looks like for you, not waiting until something feels wrong.

This matters because biology varies significantly between individuals. Two people can eat the same meals and follow the same exercise routines but their biological responses can vary greatly. By understanding your biology and your markers when you are healthy, you have a reference for the future. The ranges on standard blood tests are population averages. What's optimal for you may look quite different.

The biomarkers that came up repeatedly across the summit, that give insight into your healthspan, include:

• VO2 max - of the most powerful predictors of long-term health outcomes available. It measures how efficiently your body uses oxygen during exercise, reflecting cardiovascular fitness, mitochondrial capacity, and metabolic health all at once. The higher your VO2 max, the more efficiently your body is functioning at a fundamental level. Even modest improvements of 8 to 12 percent have been associated with better glucose control, reduced visceral fat, and improved sleep quality.
• Inflammation markers - particularly high-sensitivity CRP (hs-CRP), help identify the kind of low-grade chronic inflammation, sometimes called inflammaging. While chronic inflammation may not produce obvious symptoms it contributes silently to cellular aging, decreased energy, cognitive function and performance.
• Body composition – is about more than just aesthetics. Lean muscle mass is one of the strongest predictors of long-term metabolic resilience, yet research shows we lose roughly 3 to 5 percent of it per decade after the age of 30. Bone density follows a similar pattern, peaking in your late twenties before gradually declining. Women are around four times more likely than men to develop osteoporosis with age, making this a particularly important area to understand and support early. The good news is that both respond well to resistance training, which is one of the most evidence-backed things you can do for your long-term health.

The message from the summit wasn't that you need to obsess over data. It was that understanding a few key numbers about your own biology gives you something far more useful than following someone else's protocol. It allows you to tailor your routine and habits to what works best for your biology. 

The bottom line

The Healf Summit reminded us that the future of health isn't more complexity. It's more clarity. Understanding your own biology well enough to make decisions grounded in evidence, built on solid foundations, and guided by principles rather than protocols.

Want to go deeper on the science of NAD+ and cellular aging? Explore the Nuchido blog for more evidence-led guidance on longevity, cellular health, and what the latest research actually means for your everyday life.

References:

• Koemel, N. A., Biswas, R. K., Ahmadi, M. N., Teixeira-Pinto, A., Hamer, M., Rezende, L. F., ... & Stamatakis, E. (2026). Minimum combined sleep, physical activity, and nutrition variations associated with lifeSPAN and healthSPAN improvements: a population cohort study. eClinicalMedicine.
• Heiskanen, V., Pfiffner, M., & Partonen, T. (2020). Sunlight and health: shifting the focus from vitamin D3 to photobiomodulation by red and near-infrared light. Ageing research reviews, 61, 101089.
• Strasser, B., & Burtscher, M. (2018). Survival of the fittest: VO2max, a key predictor of longevity. Front Biosci (Landmark Ed), 23(8), 1505-1516.
• Tang, Y., Fung, E., Xu, A., & Lan, H. Y. (2017). C‐reactive protein and ageing. Clinical and Experimental Pharmacology and Physiology, 44, 9-14.
• Alswat, K. A. (2017). Gender disparities in osteoporosis. Journal of clinical medicine research, 9(5), 382.