The Light You Live In: Bright Days, Dark Nights, and Your Body Clock
The brightness of your days and the darkness of your nights is a longevity lever hiding in plain...
Longevity & Supplement Guides
Evidence-scored guides to supplements, biomarkers, and daily protocols. Written the way we score our products: honestly.
The Omega-3 Index: The Longevity Number Hiding in Your Blood
A blood number most people have never measured — the share of EPA and DHA in your red...
Are Naps Good or Bad? What the Newest Research Actually Says
Two 2026 headlines said opposite things about napping. The research resolves it — and points somewhere more useful:...
The Fittest Brain: What Cardiorespiratory Fitness Has to Do With How the Mind Ages
The strongest lever we have found for a resilient aging brain isn't a puzzle or a pill —...
The Ten-Second Balance Test: What Standing on One Leg Reveals About Aging
The clearest early sign of physical aging isn't in a lab — it's how long you can stand...
The Longevity Input No Wearable Can Measure
We track heart rate, sleep, and HRV — and overlook the longevity input with an association this strong....
Muscle Is a Gland, Too: The Myokines Your Body Releases When You Move
Skeletal muscle isn't just a machine for movement — it's the largest endocrine organ you own. Here's what...
Eat the Rainbow: Flavonoid Variety and How You Age
“Eat the rainbow” finally has a number. Two of the largest nutrition studies we have link the variety...
Do You Think Aging Is Just Decline? A New Study Says Look Again
Headlines say aging isn't only decline. A new Yale analysis finds nearly half of older adults improved in...
Range Over Repetition: The Quiet Case for Exercise Variety
A 30-year study of more than 111,000 adults suggests the body rewards the variety of movement you do,...
Introducing the Agen Evidence Score
Supplements are sold on three words that sound like evidence and aren't. So we built a 0–10 score...
Heart Rate Recovery: The Number That Shows Up After You Stop
The number that only appears after you stop. What heart rate recovery is, what large studies actually found,...
