Daily checklist

Morning — 16 oz water with a pinch of salt · morning light (10–15 min, no sunglasses) · high-protein first meal, 20–30 g (or your fasting window) · record fog, sleep, and energy scores.

Afternoon — protein-containing meal · brief walk after eating (10–15 min) · main exercise session if scheduled and energy allows.

Evening — dinner at least 3 hours before bed · dim lights 2 hours before bed · no screens 1 hour before bed · consistent bedtime.

The idea behind it

Recovery works on two fronts at once: spend less energy on the drains (poor sleep, blood-sugar spikes, chronic stress) and build more capacity (movement, light, protein, purpose). The full four-pillar system, the tiered plan for different energy levels, and the tracking templates are all in the book.

⚠️ When to seek help — Seek immediate care: chest pain or pressure · difficulty breathing · sudden severe headache · neurological symptoms (numbness, weakness, confusion) · any thoughts of self-harm. Schedule an appointment: new or worsening symptoms · no improvement after 4+ weeks · questions about medications or supplements · before making significant changes.

This is one person’s recovery account, not medical advice, and it is not a substitute for care from your own clinician. You’ll be the first to know when the full book — Huna Makia: Energy Flows Where Attention Goes — launches.

© 2026 Anand Karasi. All rights reserved.

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How AI and Ancient Wisdom Helped Me Clear the Fog of Long COVID

At a gas-station pump, I couldn’t remember my own ZIP code — a number I’d typed a thousand times. I had designed guidance systems at MIT and built an AI company, and Long COVID had taken the one tool I’d always relied on: my mind.

It took me nearly five years to find my way out. My brain-fog score went from a 9 out of 10 in June 2021 to a steady 3 by January 2026. Huna Makia is the map I wish someone had handed me at that pump.

Here’s the whole book in one sentence: the fog is an energy problem, and you have far more power over your energy than anyone told you. Not willpower — energy, the real physical kind your cells make every second. Grounded in the mitochondrial science of Dr. Martin Picard at Columbia, and built around a Hawaiian principle — huna makia, energy flows where attention goes — the book turns a five-year recovery into a concrete, trackable protocol anyone can follow.

The book is finished and seeking a publisher. While that’s underway, here are two sample chapters.

Read the sample chapters

Prologue: The Five Digits I Couldn’t Remember — https://hunamakia.substack.com/p/prologue-the-five-digits-i-couldnt

Chapter 3: You Are Energy — The Mitochondrial Key — https://hunamakia.substack.com/p/chapter-3-you-are-energy-the-mitochondrial

Get notified when it launches

Subscribe below and you’ll be first to know the moment the book is available — and you’ll get the free one-page Quick-Start Protocol as a welcome.

Table of Contents

Prologue — The Five Digits I Couldn’t Remember

How to Use This Book — Your Path Out of the Fog

Part I — The Crisis: What Long COVID Did to My Brain (Chapters 1–5)

Part II — The Guiding Principle: Meeting the Mentor (Chapters 6–7)

Part III — The Tool: Finding Solutions with AI (Chapters 8–10)

Part IV — The Solution: The Recovery Protocol (Chapters 11–15)

Part V — The Return: Lessons and the Path Forward (Chapters 16–18)

Appendices — protocol summary, tracking templates, AI conversation excerpts, peer-reviewed research, questions for your doctor, and the attention audit

This is a companion page for Huna Makia: Energy Flows Where Attention Goes, a complete book currently seeking a publisher. This is one person’s recovery account, not medical advice.

© 2026 Anand Karasi. All rights reserved.

You are not your body. You are the energy flowing through it.

That sounds like something printed on a yoga studio wall. It is, in fact, one of the more rigorous statements in modern biology, and I first encountered it through the work of Dr. Martin Picard, an associate professor at Columbia University who studies what he named mitochondrial psychobiology — the science of how our inner experience and our cellular energy shape each other. The difference between a living, thinking person and a body that has just died is not the atoms. All the molecules are still there in the moment after death. What has stopped is the flow of energy. We are, as Picard puts it, an energetic process.

The moment I read that, the Hawaiian phrase I had named my company after — Huna Makia, energy flows where attention goes — stopped being a metaphor and became a description of machinery. Because if I am energy, then brain fog is not a mood or a character flaw. It is what it feels like when energy stops flowing properly to the brain.

Let me build the picture from the ground up.

The 5,000 trillion power plants inside you

Inside almost every one of your cells are tiny structures called mitochondria — on average about a thousand per cell, adding up to something like 5,000 trillion in your body. They are the reason you are warm; the reason you can think.

📖 DEFINITION: Mitochondria — the power plants of your cells. They take the food you eat and the oxygen you breathe, strip electrons from that food, and flow them like a tiny electrical circuit toward oxygen — releasing energy that the cell captures as ATP, its universal energy currency. When mitochondria falter, every process they fuel, including thought, runs short of power.

Here is the part most of us were never taught. Mitochondria do far more than make ATP. They behave like a distributed nervous system inside you — covered in receptors, constantly sensing the environment (Is there enough fuel? Is there a stress hormone here? Is there danger?) and signaling to one another. Picard calls them little antennas inside the cell. Your trillions of power plants are also, collectively, a kind of intelligence — one that is exquisitely sensitive to how you live.

And your brain is their single hungriest customer. It is about 2% of your body weight and burns roughly 20% of your energy. No organ is more dependent on a steady, clean supply of power. No organ suffers faster when that supply is disrupted.

The fixed energy budget

The second idea is the one that finally explained my fog. You have a finite energy budget, and your body spends it according to a strict hierarchy of priorities.

Think of it like Maslow’s hierarchy, but for cells. When resources are plentiful, the body funds everything — including the low-priority luxuries of growth, maintenance, and repair. These are the anti-aging processes: clearing damaged proteins from the brain, repairing DNA, replacing worn-out mitochondria, keeping the immune system’s housekeeping current. They matter enormously over a lifetime. But they are not urgent. And when a genuine threat shows up — a lion, a deadline, or a virus — the body does exactly what a business does in a cash crisis: it defunds the long-term projects and pours everything into survival.

Now hold that idea against what a serious infection does.

Why illness feels the way it does

When your immune system is fighting a pathogen, it is one of the most energy-expensive things your body ever does. Your metabolic rate objectively rises — and yet you feel utterly drained. That paradox used to puzzle me until I understood the budget. The energy isn’t gone; it has been reassigned. Your immune system has commandeered it, and it is being pulled away from your brain.

Picard describes catching a flu on a New Year’s Eve — resting heart rate at 110 instead of 60, metabolism roaring — and finding that although he is a scientist who loves thinking about energy, he could not muster the will to open his laptop and write a single line about the very experience he was having. I just didn’t care about anything, he recalls. I was just trying to survive. He compares the mind in that state to the difference between a laser and a bare light bulb: same quantity of energy, but scattered and incoherent instead of focused. His mind had become a diffuse bulb.

Read that description again, because it is the best account of Long COVID brain fog I have ever encountered — and it came from a healthy man with a two-day flu. Everything the biologists call sickness behavior — the exhaustion, the social withdrawal, the loss of motivation, the sense that nothing matters, the wanting to lie under the covers — is not weakness. It is a coordinated energy-conservation strategy, ancient and adaptive, run by your body to free up power for the fight.

The fixed energy budget: when the body fights a chronic illness, energy is rerouted from thinking and repair to defense — and that reroute is what brain fog feels like.

🔑 KEY INSIGHT: Long COVID is sickness behavior that never switched off. If your own antibodies keep triggering low-grade inflammation (Chapter 2), your body keeps the emergency budget in force — permanently defunding the brain and the repair systems. The fog, the fatigue, the flattened motivation, even the depression, are what chronic energy diversion feels like from the inside. You are not lazy. Your power is being spent elsewhere.

This was the reframe that changed how I fought. I stopped trying to push through the fog with willpower — which only demanded more energy from a system already in deficit — and started asking a completely different question: How do I lower the drain, and how do I rebuild the supply? Every protocol in the second half of this book is one answer or the other.

Card inserted. Screen blinking. Please enter ZIP code.

Five digits. The ZIP code of the house I had lived in for years. The number I had typed a thousand times, at this exact pump, without ever once thinking about it. My thumb hovered over the keypad and — nothing. Not a blank where the number used to be. Something worse: the certainty that I knew it, sitting just behind a wall I could not reach. I could feel its shape. I could not find its face.

I stood there, forty-five years old, a man who had designed guidance systems at MIT, who had built an artificial-intelligence company, who had once held whole architectures of code in his head — and I could not remember my own ZIP code to buy gasoline.

That was the moment I stopped being able to pretend.

For months I had been telling myself a story: that I was tired, that I was stressed, that the fog would lift on its own if I just pushed a little harder. The story ended at that keypad. Because you can talk yourself out of fatigue. You cannot talk yourself out of a number that has fallen out of your own mind.

I had survived COVID-19. The fever broke; the cough faded; I counted myself lucky. My friend Ram had not been lucky — he died in a hospital an ocean away, and I will tell you about him. I walked away breathing. But something had stayed behind in me after the virus left. A fog that sleep couldn’t touch. A fatigue that turned a flight of stairs into a negotiation. A brain that had always been my most reliable tool, and suddenly wasn’t.

It would take me nearly five years to find my way out. This book is the map I wish someone had handed me at that pump.

Here is what I learned, compressed into a single sentence: the fog is an energy problem, and you have more power over your energy than anyone told you. Not willpower. Not positive thinking. Energy — the real, physical kind, the kind your cells manufacture every second of your life, the kind that either reaches your brain or doesn’t. I learned to route more of it back to my mind. I did it with an ancient Hawaiian principle for a compass, artificial intelligence for a research partner, and the stubborn belief that a solution existed even when I couldn’t see it.

In June 2021, I rated my brain fog a 9 out of 10. I couldn’t write an email. I shut down my company.

In January 2026, I rate it a 3. I work full days. I run. I ski black-diamond runs with my daughter. I wrote this book.

The distance between those two numbers is what these pages are about. I can’t promise you’ll travel it as I did — your biology is your own. But I can promise you’ll finish this book with something I didn’t have at that gas station: a method, a mechanism, and a reason for hope that is grounded in science rather than wishing.

Let’s begin.

This is a sample chapter from Huna Makia: Energy Flows Where Attention Goes — a complete book currently seeking a publisher. Subscribe below to be the first to know when it launches, and get the free one-page Quick-Start Protocol as a welcome.

© 2026 Anand Karasi. All rights reserved.

A yogurt-and-walking routine slowed biological aging 2.2% in just 12 weeks [Fight Aging]

A randomized controlled trial put overweight men aged 50 to 74 on a deliberately unglamorous 12-week program: walk or use a home stepper for at least 30 minutes on three or more days a week, cut back on overeating and sugary drinks, and eat one 100-gram serving of plain yogurt containing the probiotic Bifidobacterium longum BB536 every day. The intervention group's DunedinPACE — a DNA-methylation measure of how fast you are aging — slowed by an estimated 2.2%, while the control group did not move. That is a small but real shift from cheap, boring inputs, and it is one of the first randomized trials to bend a pace-of-aging clock in only three months. For your protocol: the win here is the stack, not any single hero supplement — pairing a daily probiotic with modest cardio and calorie discipline is exactly the kind of low-cost, low-risk combination worth running for a quarter and re-testing.

Two copies of this centenarian gene variant track with less frailty and younger immunity [Fight Aging]

The longevity-associated variant of the BPIFB4 gene (LAV-BPIFB4) shows up far more often in centenarians than in the general population, and people who carry two copies tend to be less frail with better cardiovascular and immune function. New work maps one reason why: the variant reshapes platelets, raising surface CD47 so they actively suppress monocyte activation and inflammatory signaling instead of feeding it. Strikingly, giving the recombinant BPIFB4 protein to mice reproduced the effect — and the protein is sturdy enough to survive oral delivery. That points toward a future drug that could hand non-carriers some of the anti-inflammatory resilience centenarians are simply born with. For your protocol: there is nothing to buy here yet, but it is a sharp reminder that chronic inflammation is a core aging driver — the boring anti-inflammatory basics (sleep, omega-3s, muscle, dental health) are your current stand-in for a centenarian's genetics.

Two compounds — rapamycin and MitoQ — restored aging lungs' ability to clear scar tissue [Fight Aging]

Pulmonary fibrosis — scarring that stiffens the lungs — climbs steeply with age, and this study pins part of the blame on fibroblasts that lose the ability to digest excess collagen. In aged mice, those cells showed reduced collagen phagocytosis, over-alkaline lysosomes, and elevated mitochondrial ROS, all traced to age-related loss of a regulator called PRDM16. Two interventions reversed the defect: rapamycin, which restored lysosomal function, and mitoquinone — the mitochondria-targeted antioxidant sold as MitoQ — which scavenged the ROS; overexpressing PRDM16 broke the whole mitochondria-lysosome feedback loop. It is a mechanism story in mice, not a human result, but it links two compounds already in the longevity conversation to a concrete repair pathway. For your protocol: file rapamycin and MitoQ under "watch," not "start" — the data are preclinical, but lung resilience is an underrated healthspan target worth tracking.

Senescent cells quietly shut down stem cells across muscle, bone, and marrow [Fight Aging]

A new review lays out the growing evidence that senescent cells do not just sit there leaking inflammatory signals — they actively suppress the stem cells next door. The authors walk through case after case of direct competition between senescence and stemness: mesenchymal stem cells that lose potency as they pick up senescence markers, bone-marrow stem cells whose bone-building differentiation gets blocked, and muscle satellite cells that fail to regenerate tissue. Because clearing senescent cells has repeatedly rejuvenated aged tissue in mice, this reframes senolytics as a way to unshackle your own stem cells rather than only dialing down inflammation. For your protocol: it strengthens the rationale for periodic, hit-and-run senolytic strategies (fisetin, or dasatinib plus quercetin), but human efficacy data are still thin — a reason to follow the trials closely, not to self-dose aggressively.

Old and young "backup" blood progenitors proved functionally identical — unlike their stem cells [Fight Aging]

The blood and immune system is built as a hierarchy: a small pool of hematopoietic stem cells at the root, and larger sets of intermediate progenitor cells descending from them to churn out red and white blood cells. It is well established that the root stem cells accumulate damage with age, which drives immune decline and makes platelets more prone to dangerous clotting. This work found that one progenitor population — Flk2+ multipotent progenitors — reconstituted blood just as well whether taken from young or old mice, with essentially unchanged transcriptomics, proliferation, and mitochondrial capacity. If those resilient progenitors are quietly buffering the loss of stem-cell function, it reshapes where anti-aging efforts in blood should aim. For your protocol: nothing actionable yet, but it is useful context for why age-related clotting risk rises — a nudge toward the vascular basics (movement, not smoking, managing blood pressure) while the cell biology gets sorted out.

A rare disorder of excess DNA methylation mimics aging — with an important catch [Fight Aging]

Most "accelerated aging" syndromes trace back to broken DNA repair and a pile-up of mutations, which is why they only loosely resemble normal aging. Researchers describe a different kind: a rare condition driven by excess DNA methylation that distorts epigenetic control of gene expression, producing features that superficially echo the epigenetic drift of ordinary aging. That makes it a tempting natural experiment for the popular idea that epigenetic change is a root cause of aging — but the authors flag the catch, that superficial resemblance is not proof of a shared mechanism. For your protocol: treat it as a healthy caution for the enthusiasm around epigenetic reprogramming and methylation clocks — these markers are powerful readouts, but a number moving on a clock is not the same as reversing the biology underneath it.

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An old antidepressant stretched aged mice's median lifespan 17.5% by plugging calcium leaks [Lifespan.io]

In Nature Communications, Chinese researchers traced a chain from leaky calcium stores to DNA damage: with age, cytoplasmic calcium rises through the ER's IP3R channel, elevating a protein called S100A6 that degrades the DNA-repair enzyme PARP1 and triggers cGAS-STING inflammation. Mianserin, a decades-old antidepressant that blocks the serotonin receptors feeding that channel, reversed the cascade. Given every other day for four months to naturally aged mice, it extended median survival by 17.5% and improved fur, posture, and movement; in fast-aging progeroid mice started at four weeks, it added about 30%. The caveats are real — cohorts were tiny (7–8 mice per group) and all male. For your protocol: this is early mechanism, not a prescription to chase — mianserin is a sedating psychiatric drug, and the signal here is that calcium handling is emerging as a druggable aging lever, not a green light to self-experiment.

An 8-hour eating window added 12% to male mice's lifespan — but they ate 23% less [Lifespan.io]

A new University of Texas study in Nature Aging put 528 lean mice on lifelong time-restricted feeding to ask the question the fasting field keeps dodging: is it the clock, or just the calories? An 8-hour nightly window raised median lifespan 12% and maximum lifespan 3% — but only in males, and those mice voluntarily ate 9–23% less, muddying whether the benefit came from timing or from mild caloric restriction. A 12-hour window, which caused little calorie cutting, produced no lifespan gain at all, though a 31-item frailty/healthspan index improved in both sexes on both schedules. Blood glucose, leptin, and inflammatory cytokines were largely unchanged, suggesting the benefits don't run through big shifts in systemic signaling. For your protocol: in mice, the shorter window's lifespan edge looks largely like disguised calorie restriction — a useful reality check given how uneven time-restricted eating has been in human trials.

A third of muscle-loss proteins also drive bone loss — and too much muscle backfires [Lifespan.io]

Mining UK Biobank data in Aging Cell, researchers found that sarcopenia (muscle loss) and osteoporosis (bone loss) each raise the risk of the other, especially in men. Nearly one-third of the proteins associated with either condition were tied to both — almost always in the same direction — and 12 shared genetic regions turned up, 10 positively correlated, many funneling through NF-κB inflammation. The twist was a U-shaped curve: people with very low muscle mass had weaker bones, but so did those with excessive muscle, which the authors attribute to overloading bone through too-hard or poorly designed training. Omega-3-to-total-fat ratios, smoking, short sleep, and poor gut health all showed up as mediators, though this is association-only (grip strength and heel measures, no causality). For your protocol: load your skeleton with resistance training, but don't assume more is always better — recovery, sleep, and omega-3 status appear to sit on the shared muscle-bone axis.

Across 37,500 brain scans, glucose was the No. 1 blood driver of an older-looking brain [Medical Xpress]

Writing in Molecular Psychiatry, teams at Jilin University and China Medical University trained a machine-learning "brain age" model on more than 4,000 healthy people, then computed the gap between brain and chronological age for roughly 37,500 UK Biobank participants. In the 21,780 with metabolite data, nine blood molecules tracked with faster-aging brains — and glucose showed the strongest effect of all. Higher glucose was also linked to smaller volumes across 80 cortical, subcortical, and cerebellar regions. Because it's observational, this shows correlation, not proof that lowering glucose rejuvenates the brain. For your protocol: it reinforces glucose control — through diet, post-meal movement, and weight management — as one of the few brain-aging levers you can actually pull, and it dovetails neatly with this week's fasting data.

Mars-level radiation aged mouse livers in 24 hours, echoing the NASA Twins Study [News-Medical]

A University of Central Florida team publishing in GeroScience used spaceflight as an accelerated-aging model, exposing mice to 14 days of simulated microgravity plus galactic-cosmic-radiation doses approximating a round trip to Mars. The liver responded within a day: just 24 hours after radiation, gene-expression changes "remarkably similar" to normal aging appeared, alongside rising cellular senescence, inflammation, and fibrosis. The pattern matched genetic signatures pulled from real astronaut blood in the NASA Twins Study and the Inspiration4 mission, and the changes converged on miRNA–TGF-β networks. The researchers then tested antagomirs — molecules that silence specific microRNAs — as a possible countermeasure. For your protocol: nothing to swallow here, but it's a vivid reminder that radiation and senescence pathways can drive measurable aging fast — and it hands geroscience a new, rapid model for stress-testing interventions.

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Longevity Protocol

This newsletter is focused on bring stories that can help improve longevity. Emerging technologies like AI can help improve longevity. This newsletter highlights data that indicates the direction the technology for longevity is headed.

In this weekly roundup for July 1-8, 2026, I break down three longevity signals worth paying attention to right now:

- Aging damage appearing to vary across roughly seven orders of magnitude across species

- Alpha-ketoglutarate users tracking 1.8 years younger in a 4,200-person dataset

- Long-lived families showing a roughly 13-year cardiometabolic advantage, alongside rare gene signals tied to healthy aging

Why subscribe to the newsletter:

If you want signal over hype in longevity, the Longevity Protocol newsletter helps you track the studies, numbers, and mechanisms most likely to shape real-world thinking before they become mainstream talking points. This week’s stories point to a field becoming more measurable, more mechanistic, and more actionable.

Covered in this video:

1. Aging’s Damage Spans 7 Orders of Magnitude; 2,000 Longevity Genes Stalled

2. Alpha-Ketoglutarate Tracked 1.8 Years Younger; 370 Drugs Flagged for Aging

3. A Butterfly Aged 25x Slower; Long-Lived Genes Bought 13 Years

Newsletter links for this week’s posts:

- Aging’s Damage Spans 7 Orders of Magnitude; 2,000 Longevity Genes Stalled: https://hunamakia.substack.com/p/agings-damage-spans-7-orders-of-magnitude

- Alpha-Ketoglutarate Tracked 1.8 Years Younger; 370 Drugs Flagged for Aging: https://hunamakia.substack.com/p/alpha-ketoglutarate-tracked-18-years

- A Butterfly Aged 25x Slower; Long-Lived Genes Bought 13 Years: https://hunamakia.substack.com/p/a-butterfly-aged-25x-slower-long

If this briefing is useful, subscribe to the newsletter, like this video, and comment on what I should cover next.

Disclaimer:

This is an AI avatar. All content is sourced by, edited and the video produced by AI. If you want to use the data for making decisions please independently verify the sources and the data before use.

Hashtags

#Longevity #HealthyAging #Biohacking #Healthspan #AgingResearch #Biotech #PrecisionHealth #Substack

Disclaimer

This is an AI avatar. All content is sourced by, edited and the video produced by AI. If you want to use the data for making decisions please independently verify the sources and the data before use.

Aging's damage engine spans 7 orders of magnitude, and humans run on a different setting than mice [Nature Aging]

A new modeling study fit the "saturating removal" damage model to survival curves across yeast, worms, flies, mice, dogs, cats, guinea pigs and humans, and found the single parameter that best predicts a species' lifespan is not how fast it repairs damage but how fast it produces it, a rate that varies across roughly seven orders of magnitude. Removal rate, noise and death threshold were near-universal; production was the lever. The model also splits animals into two camps: "ballistic agers" (yeast, worms, flies, mice) where damage outruns removal, and "quasi-steady-state agers" (humans, dogs, cats, guinea pigs) where damage tracks a moving set point. That formalizes something biohackers keep relearning the hard way: mouse lifespan wins often do not port to people. For your protocol: treat dramatic rodent-only results as hypotheses, not instructions, and weight human data far more heavily.

2,000-plus genes can extend life in the lab, and almost none can be delivered into your body yet [Trends in Molecular Medicine]

A new review tallies more than 2,000 genes linked to longer life across model organisms, then explains why that has not produced a shelf of anti-aging gene therapies: delivery. Getting a vector like AAV to express safely across most inner organs, or body-wide from a single IV dose, remains unsolved, and high-dose systemic vectors have caused deaths, so developers avoid them outside severe disease. The therapies that do reach the clinic exploit narrow tricks, such as turning a few fat cells into factories for circulating proteins like klotho or follistatin, or intranasal AAV to reach the brain. Even partial epigenetic reprogramming, the field's great hope, inherits the same delivery problem plus tissue-specific dosing headaches. For your protocol: when a longevity "gene therapy" is marketed to you, the first question is not the gene, it is whether it can actually reach the tissue that matters.

The muscle sensor that makes exercise pay off fades with age, and sulforaphane switched it back on in mice [Science Advances]

Researchers report that NOX4, an enzyme that generates the reactive-oxygen signal muscle uses to adapt to exercise, declines with age in both mice and humans, blunting the payoff from training. Deleting NOX4 in mouse muscle did not just stop growth; it drove overt sarcopenia, frailty, higher body fat, whole-body insulin resistance and even liver disease. Crucially, the decline was reversible: restoring NOX4 with a viral approach, or activating its downstream partner NFE2L2 with sulforaphane (the broccoli-sprout compound), reinstated the adaptive response otherwise triggered by exercise. It reframes part of age-related "anabolic resistance" as a broken redox signal rather than simple wear. For your protocol: the training stimulus is still non-negotiable, and cruciferous or sulforaphane intake is a low-risk bet, though note the rescue so far is in mice.

One longevity gene's collapse ages the male reproductive tract, and stem-cell exosomes reversed it in primates [Protein & Cell]

In aging non-human primates, single-nucleus profiling of the epididymis (where sperm mature) pinned much of the decline on principal cells losing the longevity transcription factor FOXO1. When FOXO1 falls, its FOXO1-LHX1 axis can no longer hold back cellular senescence, and the resulting inflammatory secretions drive fibrosis and functional loss. Restoring the pathway with senescence-resistant mesenchymal progenitor cells or their exosomes reversed several epididymal aging features and brought FOXO1 back, both in living animals and in human epididymal cells. It is an early but clean example of a single regulator sitting upstream of an organ's aging. For your protocol: nothing to act on yet, but it strengthens the case that senescent-cell burden, not just hormones, shapes male reproductive aging.

Your age spots are clusters of senescent cells, biopsies from 9 people confirm [Journal of Investigative Dermatology]

A dermatology team biopsied both age-spot (senile lentigo) and neighboring normal skin from 9 donors and found the pigmented lesions loaded with senescence hallmarks: elevated p16INK4A, lost lamin B1 and enlarged nuclei, pointing to UV-driven senescent cells as a driver of the spots rather than just excess melanin. That reframes a purely cosmetic nuisance as a visible readout of accumulated cellular senescence in sun-exposed skin. It also hints at why senolytic and sun-protection strategies keep surfacing in skin-aging research. For your protocol: daily broad-spectrum sun protection remains the highest-leverage move, and age spots are worth reading as a marker of cumulative photo-senescence, not a standalone flaw.

A month of intermittent hypoxia aged old mice's organs, and a jump to 5,260m aged people fast [npj Aging]

Intermittent mild hypoxia is often sold as a hormetic longevity hack, but this study exposed adult (11-month) and old (23-month) mice to a month of it and saw epigenetic-age acceleration in the lungs, spleen and heart, in the old mice only. The good news: the acceleration reversed once the mice returned to normal oxygen, tracking oxygen-sensitive chromatin (bivalent and PRC2) sites. Human data from the AltitudeOmics project, where 19 adults rapidly ascended to 5,260 meters, showed the same rapid, conserved epigenetic-aging signal. The message is nuance, not panic: oxygen swings are a real, reversible modulator of epigenetic age, and the effect may hit older tissue harder. For your protocol: if you use altitude tents or hypoxic conditioning, treat aggressive protocols with more caution as you age, and do not assume "hormesis" is uniformly beneficial.

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Alpha-Ketoglutarate Users Tracked 1.8 Years Younger Across 4,200 People [NutraIngredients]

Researchers at the National University of Singapore cross-referenced 84 supplements against saliva-based epigenetic age tests from more than 4,200 people. Delayed-release calcium alpha-ketoglutarate (the Rejuvant formulation, which also carries vitamins A and D3) stood out: its 143 users averaged 1.8 years lower biological age than non-users, and the gap held after adjusting for weight, exercise, and alcohol. The honest caveat is that the longitudinal slice of just 26 people showed no significant change over time, so this is a strong correlation, not proof. AKG is a citric-acid-cycle molecule that declines with age and has extended lifespan in flies and mice. For your protocol: AKG remains one of the better-evidenced longevity supplements, but treat 1.8 years as an association to watch, not a guarantee.

Screening 6,442 Drugs, a Network Map Flagged 370 That May Target Aging [Lifespan.io]

A Northeastern and Harvard team led by network scientist Albert-Laszlo Barabasi mapped 6,442 approved drugs onto the Hallmarks of Aging using a human protein-interaction network of over 500,000 links. Their SHARP pipeline flagged 370 compounds close enough to a hallmark to plausibly perturb it, including 83 network drugs that act only indirectly. As validation, all 8 drugs that extended mouse lifespan in the rigorous Interventions Testing Program scored positive, while fewer than half of the failures did. Strikingly, aspirin mapped to 6 hallmarks and dasatinib to 5, but rapamycin touched only 1. For your protocol: this is a candidate-generation tool, not a prescription, but it argues that a drug's breadth across aging hallmarks may matter more than its reputation.

Fast-Aging Brain Cells Tripled Alzheimer's Risk Across 60,000 People [Lifespan.io]

Stanford's Tony Wyss-Coray and colleagues built machine-learning clocks for more than 40 individual cell types by reading their protein signatures in blood, then tested them across roughly 60,000 people. Aging was strikingly uneven: 35 percent of people had no extreme age gaps in any cell type, while 1.5 percent showed extreme aging in ten or more. The payoff was in prediction. Among APOE4 homozygotes, those with rapidly aging astrocytes were nearly three times as likely to develop Alzheimer's, and accelerated skeletal-muscle-cell aging flagged ALS more than three years before diagnosis. For your protocol: a single whole-body biological age number is getting too blunt to act on, and organ-by-organ aging is where useful diagnostics are heading.

41 Human Trials Ranked What Lowers Biological Age; Rapamycin Missed [Fight Aging]

A new systematic review pooled 41 human studies that measured next-generation epigenetic clocks, the kind most tied to mortality, before and after an intervention. The approaches that consistently lowered epigenetic age were unglamorous: exercise, a plant-rich diet, caloric restriction, omega-3s, a multivitamin-mineral, the GLP-1 drug semaglutide, umbilical-cord plasma, and the statin pitavastatin. More provocative were the misses: nicotinamide riboside, rapamycin, and senolytics showed no detectable effect on these clocks, and plasmapheresis actually accelerated measured aging. For your protocol: the boring basics still carry the strongest human epigenetic data, and several buzzy interventions do not yet move these clocks, though a null clock result is not the same as no benefit.

A Human-Only RNA That Mice Lack Drove Senescence in 7 Tissues [Aging Cell]

Human genomes carry roughly three times more long non-coding RNA than mice, and this study zeroed in on one strand, LINC01021, that has no mouse equivalent. Its expression shifted with age across 7 tissues, and forcing it higher pushed human fibroblasts into senescence while silencing it protected them. Mechanistically it suppresses a protein called RBMX, which in turn raises the senescence driver p53. When researchers knocked the human gene into mice, the animals grew frail earlier, with weaker grip strength and more inflammation. For your protocol: nothing to take here yet, but it is a sharp reminder that mouse studies can miss human-specific aging drivers entirely, so stay skeptical when a rodent result is sold as a finished human answer.

Blocking One Protein Cut 3 Kidney-Failure Markers in 4 Weeks [Fight Aging]

A monoclonal antibody called AD-NP1, already cleared by the FDA for a Phase 1 heart-repair trial, turns out to help a second organ. It blocks ENPP1, a protein that injured tissue releases to stall energy production and healing. In mice given kidney-damaging drugs, blocking ENPP1 sped repair and reduced scarring, and after 4 weeks the three standard markers of kidney failure (creatinine, BUN, and cystatin C) were sharply lower than in controls. For your protocol: this is early animal work, but a regeneration approach that already has a human safety trial underway is worth tracking, especially since kidney function is an underrated longevity lever.

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Kids of long-lived parents got cardiometabolic disease 13 years later; 12 rare genes surfaced [ScienceDaily]

Researchers analyzing 212 long-lived sibships from the Leiden Longevity Study reported that middle-aged people with long-lived parents developed cardiometabolic disease on average 13 years later than their partners with shorter-lived parents. Sequencing pinned the advantage to four regions of the genome and 12 rare protein-altering variants, including one in the cGAS gene already tied to the inflammatory side of aging. This is the clearest signal yet that a meaningful share of healthspan is heritable, not just behavioral. The variants are rare, so this will not become a supplement, but it points future drug targets at inflammation and DNA-sensing pathways. For your protocol: you cannot pick your genes, but the same cGAS-driven inflammaging these families seem to dodge is the target you can chip at now with sleep, exercise, and inflammation control.

A butterfly that lives 348 days, 25x its cousin, barely ages at all [Phys.org]

A University of Bristol team in Nature Communications clocked a 25-fold gap in maximum lifespan between closely related tropical butterflies: Heliconius hewitsoni reached 348 days while its relative Dione juno lasted about 14. On average Heliconius species live roughly three times longer than their nearest cousins, and at least one, H. hecale, showed little or no physiological decline with age. The leading hypothesis is diet: Heliconius uniquely eat pollen, not just nectar, though H. hecale still outlived its relative even without it. That makes this genus a powerful new model for how aging itself can be slowed rather than just survived. For your protocol: the practical lesson is mechanistic, not a hack, but it reinforces that nutrient quality, not just calories, can reshape the aging trajectory.

One mitochondrial protein stretched mouse lifespan 6.6% and rebuilt muscle and fat [ScienceAlert]

Japanese researchers reported in Aging Cell that mice engineered to make more of the protein COX7RP lived 6.6% longer on average. The protein helps assemble mitochondrial respiratory supercomplexes, and the engineered tissue produced more ATP, carried higher NAD+, and showed lower reactive oxygen species and less of the senescence marker beta-galactosidase in fat tissue. Functionally the animals had stronger muscles and healthier fat, the two tissues that fail fastest with age. It is a clean demonstration that improving the efficiency of energy production, not just the quantity, can extend healthspan. For your protocol: it is the mechanistic case behind why NAD+ support and mitochondrial-density work like zone 2 cardio keep showing up, supercomplex assembly is the lever they are all pulling on.

Two daily beet shots lowered blood pressure in 2 weeks, only in the over-60s [Discover]

A University of Exeter crossover trial gave 36 adults in their 60s and 70s and 39 adults under 30 concentrated nitrate-rich beetroot juice twice a day for two weeks. Blood pressure dropped in the older group but not the younger one, and the effect tracked with a shift in the mouth microbiome: the bacterium Prevotella fell while health-linked Neisseria rose. The takeaway is that the benefit runs through oral bacteria converting dietary nitrate, a step that falters with age and that antiseptic mouthwash can blunt. It is a rare case where a cheap food intervention has a clear, measurable mechanism in older adults specifically. For your protocol: if you are over 60, a daily nitrate source like beetroot or leafy greens is one of the better-evidenced vascular moves, and skip the antibacterial mouthwash that wipes out the bugs doing the work.

A computer-designed molecule extended worm lifespan 30% with no rodent toxicity [RSC Medicinal Chemistry]

A virtual screen aimed at the proton-coupled folate transporter turned up a drug-like molecule, MPOL_B_1, that extended the lifespan of C. elegans by up to 30%. The compound had favorable properties in cell tests and showed no toxicity in mice and rats, the usual graveyard for promising worm hits. Targeting folate transport is an unusual angle that ties one-carbon metabolism, the same pathway methylation clocks read, directly to lifespan. It is early and worm-stage, but a clean safety profile in two rodent species is exactly what most longevity compounds lack. For your protocol: nothing to take yet, but watch the folate and one-carbon metabolism space, it is quietly becoming one of the more credible small-molecule routes to aging biology.

Aged muscle stem cells carry 3.5x more of a repair-braking protein, and removing it has a cost [UCLA Health]

UCLA scientists found that a protein called NDRG1 climbs to 3.5 times higher levels in old muscle stem cells than young ones, acting as a brake on the growth-promoting mTOR pathway. When they blocked NDRG1 in aged mice, the stem cells immediately repaired injury like young cells again, but fewer of them survived over repeated injuries. The catch reframes aging as a survival trade-off: cells slow down on purpose to last longer, so flooring the gas pedal speeds repair at the price of durability. It is a useful caution for anyone chasing maximal mTOR or growth signaling. For your protocol: this is why cycling, not constantly maxing, anabolic signals like mTOR matters, periods of activation for repair balanced with rest beats permanently pushing the accelerator.

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Biological aging ran slowest between 6.4 and 7.8 hours of sleep, across 17 organ systems [Nature]

A Columbia-led team built a "Sleep Chart" by pairing self-reported sleep duration with 23 biological aging clocks spanning 17 organ systems in roughly 500,000 UK Biobank adults. Aging ran slowest in a narrow window between 6.4 and 7.8 hours a night; both under 6 hours and over 8 hours tracked with faster aging, more disease, and higher mortality risk in a U-shaped curve. The pattern showed up across nearly every organ, not just the brain, and short sleep was specifically tied to depression, type 2 diabetes, hypertension, and heart disease. For your protocol: treat 6.4 to 7.8 hours as a hard target, and block an 8-hour sleep opportunity to reliably bank 7 quality hours.

A topical senolytic fully healed wounds in 80% of aged mice, versus 56% untreated [Aging]

Boston University researchers rubbed the senolytic drug ABT-263 onto the skin of 24-month-old mice for five days, clearing senescent "zombie" cells and switching on collagen, blood-vessel, and tissue-remodeling genes. By day 24, 80% of treated mice had fully closed test wounds, compared with 56% of untreated controls. The effect was specific to aged skin - young skin, with few senescent cells to clear, did not respond - and a topical route sidesteps the systemic toxicity that limits oral senolytics. For your protocol: this is still preclinical, but it points to a precise, local way to prime aging skin before surgery or for slow-healing chronic wounds.

Resistance training shrank the old-versus-young strength gap from 59% to 38% [GeroScience]

Analyzing muscle biopsies from two independent cohorts before and after progressive resistance training, researchers found the program reversed much of aging's transcriptomic signature, pulling senescence-associated and ATF4 stress-pathway genes back toward youthful levels. Before training, older adults were 59% weaker than young controls; after sustained training, that gap narrowed to 38%. The genes that shifted most strongly governed mitochondrial function, the system that erodes most with age. For your protocol: progressive resistance work does more than build strength - it appears to rewrite the molecular aging program in muscle, so make it a non-negotiable rather than a cardio afterthought.

Centenarians carry 37 blood proteins frozen at a youthful signature [Aging Cell]

Profiling plasma from the Swiss SWISS100 centenarian cohort against hospitalized 80-to-90-year-olds and healthy 30-to-60-year-olds, researchers flagged 583 differentially expressed proteins - and within them, a core set of 37 that stayed at a youthful, younger-than-expected level in the centenarians. These youth-associated proteins clustered in immune regulation and oxidative-stress response, suggesting extreme longevity reflects active maintenance of molecular balance, not just luck. The implicated pathways spanned programmed cell death, extracellular-matrix stability, and neurotrophic signaling. For your protocol: it is a blood map of what aging well looks like, and it reinforces that taming inflammation and oxidative stress is where the durable longevity levers sit.

Disabling one fat-burning organelle erased 100% of dietary restriction's lifespan benefit [Nature Aging]

In C. elegans, researchers traced metabolic aging to peroxisomes - the organelles that burn fat - and their import protein PRX-5. As the worms aged, peroxisomal import declined, fat-burning stalled, lipid droplets piled up, and mitochondria faltered. Degrading PRX-5 reproduced metabolic aging, while boosting it preserved lipid handling and mitochondrial integrity and extended life; critically, knocking out peroxisomal import abolished the entire lifespan gain normally delivered by dietary restriction. That makes peroxisomal function a causal hub linking fasting, fat metabolism, and longevity. For your protocol: it is a worm study, but it sharpens the mechanistic case that fasting and caloric restriction work partly by keeping your fat-burning organelles young.

Spermidine failed to beat placebo on memory in a 100-person, 12-month trial [JAMA Network Open]

Spermidine, a polyamine concentrated in wheat germ and aged cheese, is a popular autophagy-boosting supplement - but its best human test came up empty. The randomized, placebo-controlled SmartAge trial followed 100 older adults with subjective cognitive decline for 12 months and found no significant memory benefit over placebo. An earlier, smaller 3-month study of 85 nursing-home residents had shown modest gains on a cognitive battery, but the longer, larger trial did not replicate it. The autophagy rationale and the epidemiology are still intriguing; the hard clinical proof in people is not. For your protocol: spermidine is low-risk and food-derived, so keep it if you like, but do not bank on measurable cognitive gains - the strongest RCT showed none.

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In this episode, we cover key signals across tissue repair, stem cell rejuvenation, mitochondrial health, metabolic resets, biological age clocks, rapamycin, senolytics, GLP-1-related aging research, and the growing flow of capital into longevity companies.

The big takeaway: longevity science is shifting from vague anti-aging promises toward an engineering mindset — identify the mechanism, measure the biological change, improve the protocol, and scale what works.

Topics covered:
• Blood stem cell rejuvenation and immune resilience
• Rapamycin and aging hearts
• Choline, NMN, NAD+, diet timing, and metabolic pathways
• Senolytics, Yamanaka factors, GlyNAC, and systemic aging
• Biological age clocks and why better measurement matters
• Why investors are backing longevity as a serious emerging industry

Subscribe to the Hunamakia newsletter for more evidence-led breakdowns on longevity science, healthy lifespan extension, anti-aging research, and the business of human healthspan:

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This newsletter is focused on bring stories that can help improve longevity. Emerging technologies like AI can help improve longevity. This newsletter highlights data that indicates the direction the technology for longevity is headed.

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#Longevity #AntiAging #Healthspan #Biotech #Rapamycin #Senolytics #StemCells #BiologicalAge #NAD #LongevityScience

Calming overactive lysosomes made old blood stem cells 8x more regenerative [ScienceDaily]

Mount Sinai scientists reported in Cell Stem Cell that aged blood-forming stem cells carry lysosomes that are overly acidic and hyperactive, fueling inflammation and feeble regeneration. Blocking that overactivity with a vacuolar-ATPase inhibitor reset the cells to a youthful state and boosted their blood-forming capacity more than eightfold in living mice, while dialing down inflammatory cGAS-STING signaling. This is mouse work, not a pill, but it reframes stem-cell aging as reversible rather than fixed. For your protocol: nothing to take yet, but it strengthens the case that lysosomal and autophagy health — supported by fasting, exercise, and avoiding chronic overfeeding — matters for keeping your immune and blood systems young.

A 4-week lower-fat diet shaved up to 3-4 years off biological age in adults 65-75 [University of Sydney]

University of Sydney researchers put adults aged 65-75 on controlled four-week diets and scored biological age across 20 blood biomarkers including cholesterol, insulin, and CRP. The group eating a lower-fat, higher-carbohydrate omnivorous diet (about 28-29% fat, 53% carbs, half the protein from plants) showed the biggest drop — roughly 3-4 years of biological age — while those near their usual diet barely budged. It is only an early signal from a small, short trial, but it hints that macronutrient ratios, not just calories, move the needle within weeks. For your protocol: if your fat intake runs high, a one-month shift toward more carbs and plant protein is a cheap experiment to pair with a before/after biological-age test.

270,000 people: higher tyrosine tracked with ~0.91 fewer years of life in men [Aging-US]

A Mendelian-randomization analysis of more than 270,000 UK Biobank participants, newly spotlighted this month, found genetically higher blood tyrosine tracked with about 0.91 fewer years of life in men, with no significant link in women. The suspected mechanisms are tyrosine's ties to insulin resistance and stress-neurotransmitter production. Key caveat: this measured lifelong genetic levels, not supplements, so it does not prove tyrosine pills shorten life. For your protocol: if you are a man taking tyrosine for focus or mood, this is a reason to keep doses modest and reassess — the longevity upside is unproven and the genetic signal points the wrong way.

Sam Altman's Retro hit a $1.8B valuation chasing 10 extra healthy years [STAT News]

Retro Biosciences, the Sam Altman-backed longevity company, confirmed fresh financing that values it around $1.8 billion, part of a roughly $1 billion raise with Altman personally putting in nearly $180 million. Retro's stated goal is adding 10 healthy years to human lifespan via in vivo gene therapies, cell replacement, and partial-reprogramming approaches. The valuation lands amid a banner year — roughly $3.74 billion flowed into longevity biotech in Q1 2026 alone, on pace for $8-9 billion for the year. For your protocol: nothing to take, but the capital signals which mechanisms (reprogramming, cell replacement) smart money expects to reach the clinic first.

A universal clock from 11,000 samples predicts how close you are to death [Scientific American]

An international team published in Nature a "universal" aging clock built from over 11,000 tissue samples spanning mice, rats, macaques, and humans across 25 tissue types. The same gene-expression signatures predicted biological age — and proximity to death — almost identically across species, and the team released a free tool (TACO) so researchers can score their own samples. Unlike consumer epigenetic tests, this transcriptomic clock is designed to detect rejuvenation, making it a yardstick for whether an intervention actually works. For your protocol: it will not be at your clinic tomorrow, but it is the kind of standardized readout that will eventually tell you if your rapamycin, fasting, or supplement stack is doing anything real.

Restoring one brain protein reversed aging signs in old mice within 30 days [EurekAlert]

In work from Xiamen University (PLOS Biology) drawing fresh attention this month, levels of a hypothalamic protein called Menin fell sharply with age in mice, and depleting it caused brain inflammation, thinning skin, weaker bones, memory loss, and a shorter lifespan. Re-delivering the Menin gene to 20-month-old mice reversed several markers within 30 days, and three weeks of the amino acid D-serine — found in soy, eggs, fish, and nuts — improved cognition on its own. It is mouse data, and tinkering with brain signaling carries real risk. For your protocol: do not rush to buy D-serine, but the result reinforces that the hypothalamus is a master aging switch and that the dietary amino acids feeding it are worth tracking as human trials emerge.

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Oxytocin plus an Alk5 blocker stretched frail male mouse lifespan 73% [ScienceAlert]

A UC Berkeley team combined oxytocin with an Alk5 (TGF-β receptor) inhibitor in old, frail mice and extended median lifespan by up to 73% in males. The effect was strongly sex-dependent — female mice did not see the same lasting benefit, a recurring theme in aging research that complicates translation. The combo targets stem-cell renewal and inflammatory signaling rather than a single pathway, consistent with the field's shift toward multi-hallmark intervention. It's a mouse result, but a 73% gain in already-frail animals is among the largest reported and worth tracking as it moves toward human-relevant dosing.

Semaglutide slowed biological aging 9% on the DunedinPACE clock in a 2026 trial [Medical News Today]

In a randomized trial in adults living with HIV, semaglutide slowed the pace of biological aging by roughly 9% on the DunedinPACE epigenetic clock versus placebo. The same GLP-1 class has posted hard outcome data elsewhere: in a large kidney trial all-cause mortality fell 20%, and tirzepatide cut cardiovascular death or worsening heart failure by 38% in the SUMMIT trial. Researchers stress this is an early aging signal, not proof of reversal — the clock measures pace, not rewind. A five-year ARPA-H study (VITAL-H, $38M, 726 adults in their 60s) will now test semaglutide head-to-head against rapamycin and dapagliflozin. For protocol builders already weighing a GLP-1 for metabolic reasons, the epigenetic data is a reason to watch this space closely.

20 days of time-restricted eating dropped IGF-1 sharply — but pushed fasting glucose up [Diseases]

In a 20-day controlled trial in obese young women, time-restricted feeding significantly lowered IGF-1 (p<0.001) — the growth-signaling pathway tied to slower aging across animal models. The catch: fasting blood glucose rose significantly in the same group (p=0.001), a reminder that compressing your eating window isn't uniformly clean metabolically. Alternate-day modified fasting behaved differently, underscoring that protocol design matters more than the label "fasting." For biohackers chasing lower IGF-1, time-restricted eating looks effective — but pair it with glucose monitoring rather than assuming every marker moves the right way.

Three Yamanaka factors, pulsed not continuous, reversed memory aging in mice [Communications Biology]

Researchers cyclically expressed three Yamanaka factors (OSK) only in the cortical neurons of aged mice and saw reversed age-related epigenetic markers plus measurably better memory performance. Critically, only cyclic — not continuous — dosing worked; continuous expression failed to deliver cognitive gains and risks erasing cell identity. This pulsed, tissue-selective logic is the same one behind the first human partial-reprogramming effort: Life Biosciences received FDA clearance in January 2026 to test OSK gene therapy in optic-nerve patients. This is frontier mouse-and-clinic science, not a protocol input yet — but reprogramming is moving from petri dish to patient faster than most expected.

GlyNAC for 24 weeks restored glutathione and lifted strength in older adults [Baylor College of Medicine]

In a randomized trial, older adults taking glycine plus N-acetylcysteine (GlyNAC) for 16 to 24 weeks corrected glutathione deficiency, lowered oxidative stress, and improved mitochondrial function, muscle strength, gait speed, and cognition versus placebo. Some physical-function measures moved toward those of matched younger adults. The benefits faded within 12 weeks of stopping, so this is a maintenance intervention, not a one-time fix. Of the supplement data this week, GlyNAC has the broadest human outcome footprint — cheap precursors, multiple hard endpoints, and a clear redox mechanism.

One gram of omega-3 daily shaved up to ~3.8 months off biological age over three years [Nature Aging]

In the 777-participant DO-HEALTH trial, 1 g/day of omega-3 slowed several DNA-methylation clocks (PhenoAge, GrimAge2, DunedinPACE), with effects equal to roughly 2.9 to 3.8 months of slower aging over three years. Adding 2,000 IU/day vitamin D and a simple home exercise program produced additive benefit on PhenoAge. The effect sizes are modest, but these are cheap, low-risk inputs with decades of safety data behind them. For a longevity protocol, omega-3 plus vitamin D plus regular resistance and cardio is about as close to a free lunch as the epigenetic-clock literature offers.

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Restoring one membrane lipid rebuilt aging mitochondria in just 2 days [Nature Communications]

A team at the Leibniz Institute on Aging found that phosphatidylcholine — one of the most abundant lipids in cell membranes — naturally declines with age, fragmenting the mitochondrial network and starving cells of flexible energy. When they fed aged C. elegans phosphatidylcholine or its precursor choline, youthful mitochondrial structure returned within just two days, and the fix still worked when started in middle or advanced age. Human lipidomic data showed the steepest phosphatidylcholine drop in women around menopause — the same window when many report energy crashes and persistent fatigue. For your protocol, it is an early but striking case that a cheap dietary nutrient like choline may target a hallmark of aging directly rather than just masking symptoms.

1 g of NMN or NR doubled blood NAD+ in 14 days; nicotinamide did nothing [Nature Metabolism]

Nestlé Health Science researchers ran the first head-to-head human comparison of three NAD+ precursors in 65 healthy adults (average age 34.7), dosing 1 g NR, 1 g NMN, or 0.5 g nicotinamide daily for two weeks. NR and NMN each raised whole-blood NAD+ roughly two-fold, while nicotinamide produced only a transient four-hour spike and no sustained gain. The data also exposed the mechanism: gut microbes convert NR and NMN into nicotinic acid, and both precursors boosted short-chain fatty acids tied to lower inflammation. The practical takeaway — if you supplement for NAD+, NR and NMN look interchangeable and plain nicotinamide is the weak link.

Six months of cycling raised VO2 max 20% and cut GrimAge by 7.4 months [GeroScience]

In a six-month endurance-training study, participants improved VO2 max by 20% (P<0.001), and their GrimAge epigenetic clock dropped 7.44 months relative to its expected trajectory (P=0.012). The fitness gain directly predicted the slowdown in biological aging (R²=0.27), and cardiorespiratory fitness — VO2 peak specifically — tracked epigenetic age more tightly than grip strength or leg power. This is some of the cleanest human evidence that aerobic capacity does not just correlate with longevity but actually moves the epigenetic needle. For your protocol: zone 2 base work plus VO2-max intervals remain the highest-leverage, lowest-cost longevity intervention available.

Dasatinib plus quercetin cleared senescent cells from human fat in 11 days [EBioMedicine]

A short course of the senolytic combination dasatinib plus quercetin reduced senescent-cell burden in human adipose tissue within just 11 days, lowering circulating SASP inflammatory factors including IL-1α, IL-6, and MMPs. In a separate trial in idiopathic pulmonary fibrosis patients, the same intermittent protocol improved measured physical function such as six-minute walk distance. Through 2026 the approach is expanding into trials for kidney disease, frailty, osteoarthritis, and early Alzheimer’s. The biohacker takeaway: senolytics are dosed in short pulses, not daily, and the human senescent-cell-clearance signal is now real — though hard healthspan endpoints are still being established.

A single klotho gene-therapy shot extended mouse lifespan 19.7% [SciTechDaily]

Researchers delivered the longevity protein klotho to 12-month-old mice (roughly age 40 in humans) and saw median lifespan rise 15–20%, peaking at 19.7%, alongside reduced muscle fibrosis, more satellite-cell proliferation, and better bone health — from a single one-time dose. Klotho levels fall with age, and this target is unusual in improving both cognitive and physical aging at once. A human proof-of-concept klotho trial completed in spring 2026, with broader development now underway. The caveat for biohackers: mouse lifespan wins rarely translate cleanly, so treat klotho as a promising target to watch, not a protocol item yet.

1000 mg urolithin A outperformed lower doses on muscle and mitochondria [Clinical Review 2026]

Pooled placebo-controlled human data show that a 1000 mg daily dose of urolithin A (Mitopure) produces broader, more pronounced gains in mitochondrial gene expression, muscle strength, endurance, and immune markers than lower doses. Urolithin A, a gut metabolite of pomegranate and berry ellagic acid, works by triggering mitophagy — the clearing of damaged mitochondria — and earlier trials show measurable strength and exercise-recovery improvements in middle-aged and older adults. A new randomized trial (updated March 2026) is directly comparing 500 mg versus 1000 mg over six months. Practical note: many people do not produce meaningful urolithin A from food on their own, so supplementing may matter more here than diet.

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$435M just went into reversing aging cell by cell, human liver trial set for 2027 [STAT]

NewLimit, the cellular-reprogramming startup co-founded by Coinbase's Brian Armstrong, raised a $435 million Series C led by Founders Fund, pushing its valuation to roughly $3.1 billion. The company is trying to partially reprogram aged cells back to a younger state without erasing their identity, and plans to start its first human trial — targeting the liver — in 2027. This is the third raise in about a year, after a $130M Series B in May 2025 and $45M more in October. For longevity watchers, it's the clearest signal yet that partial reprogramming is moving from mouse studies toward the clinic, with serious capital betting on the timeline.

1mg rapamycin daily for 8 weeks improved heart filling in all six men aged 70–76 [GeroScience]

In a GeroScience pilot study, six healthy men aged 70–76 took 1 mg of rapamycin daily for eight weeks, and cardiac MRI showed statistically significant improvements in diastolic function — transmitral blood flow, peak filling rate, and blood acceleration all rose in every participant, alongside better endothelial function. Diastolic decline, a stiffer heart that fills poorly, is one of the most reliable signatures of cardiac aging, so reversing it even modestly is notable. The sample is tiny and uncontrolled, so treat it as a signal, not a protocol — but it's a clean, quantified human result for the most-studied molecule in geroscience.

A daily multivitamin bought back about four months of biological aging over two years [Nature Medicine]

Researchers at Mass General Brigham analyzed 958 healthy older adults (average age 70) from the COSMOS randomized trial and found that two years of a daily multivitamin slowed biological aging across all five DNA-methylation clocks they measured, with two mortality-linked clocks reaching statistical significance. The overall effect equaled roughly four fewer months of biological aging over the two-year window, and the benefit was largest in people already aging faster than their chronological age at baseline. It's a modest but cheap, accessible intervention with hard epigenetic data behind it — a reminder that the basics still move the needle.

Resetting old mice to their own youthful microbiome cut liver cancer to zero of eight [Digestive Disease Week]

In work presented at Digestive Disease Week 2026, scientists at UT Medical Branch banked fecal samples from young mice, then transplanted each animal's own younger microbiome back as it aged. None of the eight treated mice developed liver cancer, versus two of eight untreated controls, and the treated group showed less inflammation, less DNA damage, and suppressed MDM2 — a cancer-linked gene that runs high in aged livers. The team reports the reset reversed several aging hallmarks at once, including fibrosis, mitochondrial decline, and telomere attrition. It's still mouse data, but it reframes the aging microbiome as an active driver of decline rather than a passive marker.

Shingles-vaccinated adults over 70 aged slower on epigenetic clocks, and it held 4+ years [USC Leonard Davis]

A USC analysis of more than 3,800 Americans aged 70 and older in the Health and Retirement Study found that those who received the shingles vaccine showed slower biological aging across seven markers, including epigenetic and transcriptomic clocks, after adjusting for health and demographics. The effect appeared durable: people vaccinated four or more years before their blood draw still aged more slowly than the unvaccinated. The likely mechanism is reduced "inflammaging" — by preventing viral reactivation, the vaccine may quiet the chronic low-grade inflammation tied to heart disease, frailty, and cognitive decline. A reminder that immune maintenance is longevity infrastructure, not just infection defense.

A naked mole rat gene gave mice 4.4% longer median life and stronger tumor resistance [University of Rochester]

University of Rochester researchers engineered mice to carry the naked mole rat version of the hyaluronan synthase 2 gene, which drives production of high-molecular-weight hyaluronic acid (HMW-HA). Naked mole rats carry about ten times more HMW-HA than mice or humans and can live up to 41 years — nearly ten times longer than similar-sized rodents — while rarely developing cancer. The modified mice resisted spontaneous and chemically induced tumors, had less age-related inflammation and better gut health, and lived about 4.4% longer at the median. The team is now testing molecules that slow HMW-HA breakdown, aiming to translate the mechanism to humans.

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