Longevity
Biological age, lifespan biomarkers, and the evidence-based interventions that actually move the needle on healthspan.
- 🧮 Tools
Biological Age Calculator: Estimate Your Age from Blood Tests [2026 Method]
Estimate your biological age using blood test biomarkers. Learn the PhenoAge method and track your aging rate using 9 key blood markers.
8 min read - 🧪 Tools
What Blood Tests to Get Before Starting Supplements
Get baseline blood tests before supplementing. Learn which markers to test before starting vitamins, minerals, and herbal supplements safely.
8 min read - 🧠 Longevity
Brain Aging Biomarkers: Blood Tests That Predict Cognitive Decline
Brain aging biomarkers in blood: hs-CRP, homocysteine, NfL, p-tau predict cognitive decline. Preventive blood test markers for brain health.
9 min read - 🧮 Tools
HOMA-IR Calculator: Measure Your Insulin Resistance [Formula + Chart]
Calculate HOMA-IR to assess insulin resistance using fasting glucose and insulin levels. Includes formula, chart, and interpretation guide.
6 min read - 🧮 Tools
Triglyceride to HDL Ratio Calculator: The Best Insulin Resistance Marker [Chart]
Calculate your triglyceride-to-HDL ratio to assess insulin resistance and cardiovascular risk. Includes formula, chart, and actionable guidance.
7 min read - 📱 Tools
Best Blood Test Tracking Apps in 2026: 8 Options Compared
A detailed comparison of the best apps to track blood test results in 2026 — including Merios, InsideTracker, Function Health, Carrot Care, Soka, and more.
10 min read - 📋 Pillar
Blood Test Results Normal Range Chart: Complete Reference Guide
A comprehensive blood test normal range chart covering CBC, metabolic panel, lipids, thyroid, liver, kidney, hormones, vitamins, and inflammation markers with optimal ranges.
12 min read - ⏳ Pillar
Biological Age vs Chronological Age: How to Measure How Fast You're Actually Aging
Your biology can be 10 years younger or older than your ID says. How biological age is measured (PhenoAge, epigenetic clocks) and how to lower it.
9 min read