I Was Swimming In Brown Ocean Water In Santa Marta When It Hit Me.

Note: This is an off-topic post. No gate scores. No company evaluations. Just me, on a beach in Colombia, thinking about the stuff we can do right now while the interventions we track in this newsletter work their way through FDA trials.

Several weeks ago I flew to Santa Marta to decompress.

If you know Colombia, you know Medellín is mountains and Santa Marta is coast. Caribbean water, Sierra Nevada backdrop, the kind of place where your nervous system downshifts whether you want it to or not.

I went swimming in the ocean. And I should tell you, there was brown stuff floating in the water. River sediment, maybe seaweed, probably some things I don't want to name. Not exactly the pristine Caribbean postcard. I stayed in anyway. Sometimes you just need salt water and horizon.

When I came out, there were four women doing yoga on the beach. I asked if I could join. They said yes. So there I was, a 52-year-old biotech investment researcher in his Brazilian swim trunks, doing yoga poses on sand while insects flocked to me like I was emitting some frequency only they could hear. Sand flies, mosquitoes, things I couldn't identify. I was apparently the buffet.

And somewhere between downward dog and whatever the bugs were doing to my ankles, my mind went to gratitude.

Not the Instagram version. Not the hashtag. The actual physiological state that researchers have now linked to living longer. Because I spend my weeks buried in clinical trial data and acquisition multiples for companies trying to extend human lifespan by targeting aging hallmarks. But the most recent longevity data that stopped me in my tracks had nothing to do with senolytics or mitochondrial therapies.

It was about saying thank you. And meaning it.

In July 2024, Harvard published a study in JAMA Psychiatry that should have gotten more attention than it did. Researchers tracked 49,275 older women from the Nurses' Health Study who completed a six-item gratitude questionnaire in 2016, then followed up to identify deaths through 2019. Those who scored in the highest third on gratitude had a 9% lower risk of all-cause mortality over the following four years compared to the lowest third.

Nine percent. After controlling for physical health, economic circumstances, and other aspects of mental well-being.

This was the first study to directly examine gratitude's relationship to mortality, and a 9% reduction in mortality risk is meaningful. To put that in context, this is a free intervention. No IND filing required. No Phase 2 trial. No $100M Series A. You can start tonight.

The proposed mechanisms include improved mental health and social well-being, greater motivation to maintain healthy habits, better cardiovascular health, reduced inflammation, and improved cholesterol levels.

That inflammation piece matters for anyone who reads this newsletter. Inflammaging is the throughline connecting half the companies in our 25-Gate Framework. And gratitude appears to down-regulate it. For free.

Gratitude doesn't exist in isolation. It feeds into a broader psychological architecture that the data says matters enormously.

Optimism: 11-15% longer lifespan. A 2019 study published in PNAS followed 69,744 women and 1,429 men and found that optimism is specifically related to 11 to 15% longer life span, on average, and to greater odds of achieving "exceptional longevity," living to age 85 or beyond. These relations were independent of socioeconomic status, health conditions, depression, social integration, and health behaviors. The most optimistic participants had 1.5 to 1.7 times greater odds of surviving to 85. And optimism is learnable. Cognitive behavioral techniques can shift your baseline.

Purpose in life: up to 46% reduced mortality risk. A 2022 study by Eric S. Kim and colleagues found that older adults with the highest sense of purpose had a 46% lower risk of mortality over four years compared to those with the lowest scores. Earlier longitudinal work from the MIDUS sample showed that purposeful individuals lived longer than their counterparts during the 14 years after assessment, even when controlling for other markers of psychological and affective well-being. The Japanese call it ikigai, a life worth living. Whatever you call it, the data says it keeps you alive.

Social connection: the anti-cigarette. A meta-analytic review of studies found that social isolation carries roughly a 29% increased likelihood of mortality, loneliness about 26%, and living alone about 32%. The U.S. Surgeon General declared loneliness a public health epidemic, comparing its mortality impact to smoking up to 15 cigarettes daily. More recent analyses have nuanced that comparison (the direct equivalence may be overstated), but the direction is clear: isolation kills.

Here's what hit me on that beach. I track 358+ companies. I evaluate 25 gates. I monitor clinical trials, capital raises, and FDA designations. But the interventions with some of the strongest population-level evidence for extending life are psychological states I can cultivate for free, starting today.

I've been studying the protocols of people who take longevity seriously at the personal level, not just the investment level.

Siim Land is ranked number four on the Rejuvenation Olympics leaderboard. He's 30 years old with a biological pace (DunedinPACE) of 0.62, meaning he's aging roughly 38% slower than average. His protocol is methodical: resistance training three times a week, zone 2 cardio twice a week, daily walking at 10-12K steps, sauna four times a week, time-restricted eating, blue light blocking before bed, comprehensive blood panels twice a year, DEXA scans annually. His supplement stack (I believe based on public info) is targeted: glycine, collagen, omega-3s, vitamin D, magnesium, with cyclical additions like berberine and creatine.

Peter Diamandis comes at it from the other direction, as an entrepreneur and investor who wrote the book on this (literally: "Longevity Guidebook"). His key insight that I keep coming back to: greater than 70% of your potential longevity is based on lifestyle, not genetics. His protocol covers sleep optimization (8 hours, consistent bedtime, cool room), protein prioritization (1g per pound of bodyweight), elimination of sugar and processed food, continuous glucose monitoring, and a fasting mimicking diet twice a year.

Both of them are essentially saying the same thing: the highest-ROI longevity interventions are boring. Sleep. Movement. Real food. Stress management. Monitoring. They're not sexy. They don't require a $2M Bryan Johnson budget. And they work.

But here's what I notice in most longevity protocols, including my own: the psychological and social dimensions get treated as afterthoughts. Siim mentions sauna and walking with his dog. Diamandis talks about mindset. But neither of them builds the gratitude/purpose/connection stack with the same rigor they apply to their supplement protocols.

And the data says that's a gap.

Here's what I'm already doing:

Distilled water. Time-restricted eating. Resistance training. Yoga (now including impromptu beach sessions with strangers, apparently). Clean air focus. Sleep mask. Supplements. Regular blood testing and monitoring with Ultrahuman. Daily meditation. Zone 2 cardio. Low carbs, no processed foods. Stem cell IVs. Bachata and salsa dancing (which is both zone 2 and social connection, for what it's worth).

That's a solid physical stack. But when I look at the psychological longevity data, I have to ask: am I spending as much intentional effort on gratitude, optimism, purpose, and social connection as I am on my supplement timing?

The honest answer is no. And the data says that's leaving years on the table.

This isn't just "feel good" science. The mechanisms are becoming clearer.

Research shows gratitude is associated with better sleep quality, lower blood pressure, a stronger immune system, and less risk of memory decline. People who keep a gratitude journal sleep better and longer, and in one 11-week study, those who kept a weekly gratitude journal exercised 40 minutes more per week than the control group.

That exercise finding is important. Gratitude doesn't just make you feel warm. It appears to make you more likely to do the other things that extend your life. It's a force multiplier for the rest of your stack.

Gratitude is associated with improved mental health and social well-being, and individuals with higher levels of gratitude may be more motivated to take care of their health. Previous research has linked it to improved cardiovascular health and reduced inflammation.

So here's my attempt to quantify it, EverLife Capital style:

Gratitude practice: estimated L-45 equivalent of 1.0 to 2.0 years of additional healthy life.

That's based on the 9% mortality reduction from the Harvard JAMA study, the downstream effects on inflammation and cardiovascular health, the behavioral multiplier (more exercise, better sleep), and the compounding effect when stacked with optimism and purpose. The combined psychological stack (gratitude + optimism + purpose + social connection) could plausibly add 3 to 7 years of healthy life, probability-weighted.

For context, that's in the same range as the L-45 personal impact scores I assign to some of the cryopreservation and organ banking companies we track. And it requires zero FDA approval.

1. Evening gratitude journal, 5 minutes before sleep. Intentionally fostering gratitude by writing down or discussing what you are grateful for a few times a week has been shown to be effective. I'm doing it nightly. Three specific things. Written, not just thought. The pen matters because it forces specificity.

2. Weekly gratitude expression to one person. Not a text. An actual conversation or voice note where I tell someone specifically what I appreciate about them. The social connection research says the quality of your relationships matters more than the quantity. Expressing gratitude deepens the relationships you have.

3. Purpose audit, quarterly. The purpose research is clear: it reduces mortality risk across all adult age groups, but purpose needs to be actively maintained, especially through life transitions. I just sold part of a business I ran for 24 years. EverLife Capital IS my purpose now, extending healthy human lifespan through better investment analysis. But I need to check that alignment regularly, the same way I re-score portfolio companies every quarter.

4. Say yes to the yoga. When four strangers on a beach are doing yoga, point to the ground and nod your head to self-invite. When the bachata studio has an event, you go. When someone invites you to something, you show up. Social connection isn't something you schedule in a biohacking app. It's something you allow by being present and available. The bugs on the beach were annoying. The yoga was worth it.

5. Morning reframe practice. The optimism data says that shifting from the lowest to the highest quartile of optimism is associated with 11-15% longer lifespan. That's not Pollyannaism. It's a trained cognitive pattern. When I catch myself catastrophizing about a portfolio company's Phase 2 miss, I ask: what's the realistic best case? What's the next move? Diamandis calls it shifting from complaint to solution. I'm making it a daily practice.

I spend my professional life evaluating companies, many that need $50M to $500M and 10 to 15 years to maybe move the needle on human aging. I believe in that work. It's why this newsletter exists.

But while we wait for senolytics to clear Phase 3 and for Until Labs to rewarm a pig kidney, there are interventions available right now, today, that have population-level evidence for extending healthy lifespan. They cost nothing. They have no side effects. And most of us, including me, aren't doing them with the same rigor we apply to our supplement stacks.

Gratitude: 9% mortality reduction (Harvard, JAMA Psychiatry, 2024). Optimism: 11-15% longer lifespan (PNAS, 2019). Purpose: up to 46% mortality risk reduction (Kim et al., 2022). Social connection: 26-32% mortality risk from isolation (Holt-Lunstad meta-analysis).

These are real numbers from real studies in real journals. And they compound.

I was floating in brown water off Santa Marta with sand flies eating my ankles, and I was grateful to be alive, in the Caribbean, at 52, building something that matters, with decades of runway ahead if I play this right.

That feeling isn't soft. It's strategic. And the data backs it up.

Eric is the founder of EverLife Capital, a longevity biotech investment research platform. He evaluates therapeutic companies through a proprietary 25-Gate Framework (v4.1) and tracks infrastructure companies through the L-45 classification system. He is 52, and has an operational target of reaching 120+ in good health. Subscribe for deep dives on the companies working to extend healthy human lifespan.

All analyses are educational. Hypothetical paper portfolio only. Most biotech companies fail. This is not investment advice.