Longevity Labs & Biomarkers

The Underrated Biomarker That Predicts Stroke & Dementia Risk

It’s not HRV, glucose, or inflammation. But it predicts your risk of stroke, dementia, and kidney decline decades before symptoms.

When was the last time you checked your blood pressure—without being told to?

Most people only learn their numbers when they’re already high.

But here’s what often gets missed:

Blood pressure is one of the strongest, easiest-to-monitor predictors of long-term health.

And ~50% of all U.S. adults already fall above the “normal” range.

That’s not just a cardiovascular issue. It’s a brain, kidney, and aging issue.

Let’s unpack why—plus the simple protocol I’ve followed to keep mine at 101/66 for 20+ years.

No meds. No salt restriction.

The Underrated Biomarker That Predicts Stroke & Dementia Risk Read Post »

Kidney Stone Prevention (beyond hydration & avoiding spinach)

A lot of Longevity Vault members have asked me over the years: “If I just drink more water and avoid spinach, am I safe from kidney stones?”Or: “Kidney stones run in my family—does that mean I’m stuck with them?” Short answer: those things matter. Longer answer: they only touch a small part of the problem. Most kidney stones—70-80%—are calcium oxalate. So if you’re thinking about prevention, oxalate is the main variable. That sets up the more useful question: Is “water + avoiding high-oxalate…

Kidney Stone Prevention (beyond hydration & avoiding spinach) Read Post »

Vitamin B12 and Fertility: How It Impacts Testosterone and Sperm Count

Testosterone and sperm aren’t just fertility metrics—they’re early biomarkers of how your body is aging. This article breaks down the overlooked role of vitamin B12 in male hormone health, sperm motility, and DNA integrity. Backed by human studies, mechanistic data, and actionable testing tips, it makes the case for using B12 status as an early signal for biological decline.

Vitamin B12 and Fertility: How It Impacts Testosterone and Sperm Count Read Post »

Vitamin D Protocol: 5 Fixes I Learned in 5 Years of Testing

This step-by-step guide reveals my vitamin D protocol after five years of tracking. I cover how much vitamin D3 you should take daily, why sunlight alone isn’t enough, and what optimal vitamin D levels actually look like—plus the exact mistakes that kept my levels low. Backed by test results and years of refinement, this is your shortcut to a smarter, seasonal strategy.

Vitamin D Protocol: 5 Fixes I Learned in 5 Years of Testing Read Post »

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