The longevity short list — what's actually worth doing

The longevity space in 2026 is loud. Newsletter algorithms optimise for novelty, supplement companies optimise for stack size, and the discourse rewards whoever can name the most exotic compound. The actual research base — boring, well-replicated, mostly free — keeps pointing at the same handful of things.

Here is what I think is worth paying attention to. None of it is novel. None of it requires a subscription, an app, or an unusual supplement. It's the short list a careful clinician would write.

1. Sleep, regularly

Not "8 hours" — regular. The largest cohort studies on sleep regularity associate irregular schedules with elevated mortality risk independent of total hours. Pick a bedtime, hit it within a 30-minute envelope, hold the line on weekends. Pair with morning sunlight within an hour of waking. Of all the things that show up in healthspan research, this combination has the highest impact-per-effort ratio.

2. Move daily, lift twice a week

The research signal on movement is consistent across cohorts: a baseline of cardiovascular activity (zone 2, conversational pace) plus resistance training to preserve muscle mass. The exact protocol matters less than the regularity. Walking 7,000–10,000 steps a day, two structured strength sessions a week, and most of the longevity benefits of exercise are captured. VO2 max is meaningful as an outcome marker because it correlates with mortality — but the way to improve it is unspectacular consistency, not heroic intervals.

3. Eat plants first, get enough protein

The Mediterranean diet has more replicated evidence behind it than any other dietary pattern. The Blue Zones diets converge with it on the central insight: plants first, fish present, olive oil present, ultra-processed foods rare. Layered onto this, the more recent evidence base on protein in midlife points to higher floors than the standard RDA — somewhere around 1 g/kg body weight, with skewing toward the higher end for those over 60. Sufficiency, not extremes.

4. Time-restricted eating, gently

A 12–14 hour overnight fast — finishing dinner by 19:00, breakfast at 09:00 — has the strongest evidence base among time-restricted eating patterns. The aggressive 18+ hour windows have thinner evidence in healthy populations and trade off with protein adequacy. The point isn't fasting hard; it's giving the metabolic system a regular daily reset.

5. Stress practice, ideally daily

Chronic sympathetic activation is the under-acknowledged accelerant of biological ageing. The research-aligned interventions are unglamorous: a few minutes of slow breathing daily (4-7-8, box breathing, coherent breathing — the specific protocol matters less than doing it), meditation if it suits you, and time spent in non-stimulating environments. Trees, walks, conversation without screens.

6. Connection, on purpose

This is the one most often skipped, and it shouldn't be. Strong relationships predict mortality risk in cohort data with effect sizes comparable to smoking cessation. The intervention is unglamorous and irreplaceable: weekly meals with people you care about, hobbies that bring you into rooms with strangers, family relationships actively maintained. Loneliness is, by the numbers, a longevity problem.

What's not on the list — and why

You'll notice what isn't here. No NMN, no rapamycin, no metformin-for-prevention, no resveratrol, no comprehensive supplement stack, no biological-age testing, no continuous glucose monitor for the metabolically healthy.

This isn't because those topics are uninteresting. Some are genuinely promising areas of investigation. It's that, in a healthy adult who isn't doing the six things above consistently, none of the high-novelty interventions show up as the rate-limiting step. The literature is unromantic on this point: the unglamorous things capture the vast majority of the available healthspan benefit, and the exotic interventions add small marginal returns at best, often at meaningful cost.

If the six basics are dialled in for a year and you still want to layer further, that's a conversation worth having — with your physician, with attention to your specific biomarkers, and with a clear sense of what evidence threshold a given intervention actually meets. But before that, the basics.

A small note

This is editorial, not medical advice. I'm Healicus's scientific lead, not your clinician. If you're pregnant, breastfeeding, taking prescription medication, or have a medical condition, the considerations are different and the conversation should happen with your doctor.

The honest summary: longevity is mostly about doing simple things consistently for a long time. The supplement industry would rather sell you something more exciting than that. The research literature, if you read it carefully, mostly doesn't.

— Carmen