No personality cults. No miracle stack.
Longevity advice, held to the standard of human evidence.
Use a free decision tool when the question is specific. Use the protocol when the system is not. Then read the evidence review before spending money, changing treatment, or adding another intervention.
Human outcomes over mechanisms.
A pathway diagram is not a result. We weight randomized trials and large cohorts in people, and we say so when the evidence is thin.
Effect sizes over headlines.
“Significant” can mean trivial. We report how much an intervention actually moves the marker, and for whom.
Boring basics beat exotic stacks.
Sleep, strength, cardio, and nutrition deliver most of the benefit. Everything else is layered on top, one defined problem at a time.
Longevity and recovery studios
Heat, cold, light and pressure—without confusing the menu for a protocol.
Learn what the evidence actually supports for traditional and infrared sauna, red light therapy, cold plunge, compression and hyperbaric oxygen. Then use a studio-quality checklist before committing to a package.
Free tools for real decisions
View all toolsSupplement Decision Scorecard
Pressure-test the evidence, target, measurement plan, safety review, and stop rule before another bottle enters the stack.
Buy for the decision, not the dashboardLongevity Wearable Fit Finder
Compare ring-first recovery, training-load, smartwatch, and long-battery approaches without pretending one device wins for everyone.
More testing is not automatically betterLongevity Lab Discussion Builder
Create a concise core-and-conditional checklist around cardiometabolic risk, testosterone evaluation, fatigue, or performance.
The advertised monthly price is incompleteTRT Cost Calculator
Model setup, membership, medication, supplies, labs, follow-ups, and five-year cost across two care options.
One research model, not a verdictPhenoAge Biological Age Calculator
Run the published Levine 2018 equation over nine routine markers from a single blood panel, with the method and its limits stated plainly.
Research Brief · Issue 1
The Stack Is Not the Protocol
Why the fastest way to improve a longevity stack is often to stop adding to it—and force every bottle to defend its job.
Latest articles
All 85 articlesHRV and Longevity: What Your Heart Rate Variability Score Actually Tells You
Heart rate variability is one of the most trackable longevity biomarkers available today. A practical guide to HRV ranges, what drives the number, and how to use it to protect your healthspan.
Omega-3 and Cardiovascular Longevity: What REDUCE-IT and STRENGTH Actually Showed
A deep-dive into the two landmark omega-3 cardiovascular trials, why they produced opposite results, and what the evidence means for EPA and DHA dosing in a longevity protocol.
How to Increase VO2 Max After 40: Training Protocols That Actually Work
VO2 max declines ~10% per decade after 25 — but 50–70% of that loss is preventable. Here are the evidence-backed training protocols that reverse the slide after 40.
GlyNAC for Longevity: What the Human Trials Actually Show in 2026
GlyNAC (glycine + NAC) corrected multiple aging hallmarks in randomized human trials. A full evidence review — mechanisms, doses, risks, and where it fits your longevity stack.
Fasting Mimicking Diet for Longevity: What the 2025 Human Trials Actually Show
The first human trial showing FMD activates autophagy. What Nature Communications and GeroScience 2025 data mean for your longevity protocol.
Does Spermidine Work for Longevity? What the 2025 Human Trials Actually Show
Spermidine is the most diet-accessible autophagy activator in longevity research. A deep-dive into the 2025 human RCT data, food sources vs supplements, evidence tiers, and what practitioners actually see.
Rapamycin for Longevity: What the 2026 Evidence Actually Shows
Rapamycin is the most discussed prescription longevity drug — and also the most misunderstood. A deep-dive into mTOR biology, the PEARL trial, real-world off-label use, and the honest risk framework for longevity readers.
Berberine vs Metformin for Longevity: What the Evidence Actually Shows in 2026
Both activate AMPK. Both lower blood glucose. But is berberine a real metformin alternative for non-diabetic longevity users? A deep-dive into the mechanisms, clinical trials, and practical decision framework.
The Longevity Blueprint
The full protocol manual behind this site: exercise, nutrition, sleep, advanced interventions, and a 90-day biomarker dashboard, with the evidence graded honestly.