Guides

How to test smarter,
not just more.

Standard bloodwork tells you whether you’re sick. Longevity testing tells you how fast you’re aging. These guides cover what to order, what the optimal ranges actually are, and what your doctor probably skipped.

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The Best Longevity Blood Panel — A Complete Guide
Every marker worth tracking organized by priority tier — from the non-negotiable foundation through the advanced add-ons that separate longevity medicine from standard care.
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Best Blood Tests for Men Over 40
ApoB, fasting insulin, free testosterone, SHBG — the markers that predict cardiovascular risk and hormonal decline in men, and why standard care consistently misses them.
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Best Blood Tests for Women Over 40
Beyond the perimenopause question — ApoB, fasting insulin, full thyroid, estradiol, ferritin, and the cardiovascular risk shifts that standard care almost never measures.
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How to Lower ApoB: Evidence-Based Guide
Every intervention that measurably lowers ApoB — statins, diet, supplements — ranked by effect size with a 6-phase protocol and the targets that actually matter for longevity.
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How to Improve Insulin Sensitivity
The evidence-based protocol for reversing insulin resistance — what actually moves fasting insulin and HOMA-IR, ranked by effect size with a sequenced intervention plan.
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How to Optimize Testosterone Naturally
Every evidence-based intervention that raises testosterone — sleep, body composition, training, micronutrients — ranked by effect size, plus when natural optimization isn’t enough.
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How to Reduce Chronic Inflammation
What actually lowers hsCRP and IL-6 — diet, sleep, visceral fat, gut health, and the overlooked drivers — ranked by effect size with a 6-phase protocol.
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How to Fix Nutrient Deficiencies
Which deficiencies matter most for longevity, which labs to run, and how to correct them at the right dose with the right form — including the reference range problem nobody talks about.