Twice a year I get my Function Health results back — more than 100 biomarkers pulled from my blood and analyzed. It's the single most important thing I do in my 200 Year Life Project, because it's the one place I can't lie to myself. The scale can be fooled. The mirror can be fooled. Blood doesn't care how I feel — it just tells me what's true.
In June 2026 I got my latest Function Health results back. My biological age came in at 56.
In January 2026, that same blood test said 58.
I'm 71 years old, and in six months my body got two years younger.
What Is a “Biological Age” From Blood?
Your chronological age is just the calendar — how many birthdays you've had. Your biological age is how old your body actually behaves, and the two can be wildly different. Two 71-year-olds can be a decade apart on the inside depending on inflammation, metabolic health, organ function, and dozens of other markers.
Function Health draws my blood and runs it through more than 100 biomarkers — cholesterol and lipid particles, blood sugar and insulin, inflammation markers, kidney and liver function, thyroid, hormones, vitamins, heavy metals, and more. It then models a biological age from that whole picture. It's not one number pulled from thin air; it's the sum of what's happening in my chemistry.
That's why I trust it more than anything else I track. You can find every one of these numbers, updated as I test, on my Blood Test Results page. Everything is public.
58 in January, 56 in June
Here's the part I'm proud of. When I tested in January 2026, the blood said 58 — already younger than my calendar age, but I wasn't satisfied. Over the next six months I stayed relentless with the protocol: sleep, nutrition, movement, targeted supplements, sunlight, grounding, and everything else I document on this site.
When the June blood came back at 56, that wasn't a fluke or a good night's sleep before the draw. Biological age from blood work moves slowly, because it reflects real changes across your whole system. Dropping two years in six months means the inputs are working. The trend line is pointing exactly where I want it: down.
For context, this is the same 56 you'll see referenced in my CardioSmile review. Different tools measure different things — the Hume scale reads my body composition and says 53, the blood reads my chemistry and says 56 — but they're all telling the same story from different angles.
Why I Test Twice a Year Instead of Guessing
Most people my age get a basic panel once a year at their physical, if that — maybe a dozen markers, a quick glance, and “see you next year.” That's flying blind. You can't manage what you don't measure, and you certainly can't catch a problem early if you only look once a year at a handful of numbers.
Testing more than 100 markers twice a year does three things for me:
First, it catches problems while they're small. A marker drifting the wrong way shows up as a trend long before it becomes a diagnosis. Second, it tells me what's actually working. When I add or change something in my protocol, the next round of blood tells me whether it earned its place. Third, it keeps me honest and motivated. It's a lot harder to skip the hard stuff when you know the blood is going to grade you in a few months.
How I Moved the Number
I'm not going to pretend one magic pill did this. It's the whole stack, compounding. The pillars that I believe moved my biological age the most between January and June:
Sleep. I treat sleep as the number one longevity weapon, and I protect it obsessively. Nutrition. Real food, heavy on the anti-aging inputs, and I take some of it on the road so I never have an excuse. Movement. Consistent activity, resistance work, and staying on my feet. Targeted supplements. Only the ones I can justify, tracked against the blood. Light and grounding. Morning sun, blocking junk light at night, and staying connected to the earth.
None of it is exotic. All of it is consistent. Consistency is the whole game.
Get Your Own Blood Tested
If you're serious about your own longevity, this is where I'd tell you to start. Not another supplement, not another gadget — get your blood tested properly so you actually know where you stand. You can't build a 200-year life on guesses.
Start here: GaryLeland.com/Function — that's my affiliate link, which means I may earn a small commission at no cost to you. It helps keep this project going. Use my link to get their best current offer on the full biomarker panel.
Everything I do is public and free at GaryLeland.com.
A note from Gary: I'm not a doctor, and I'm definitely not your doctor. Nothing here is medical advice. Blood work should be reviewed with a qualified physician, and you should check with your doctor before you copy anything I do.
Stay sovereign, stay healthy.
These are products I use on my push to 200. I only put something on this list after I’ve tested it on myself. The links are affiliate links, which means I may earn a small commission at no cost to you.
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