Topic
Diagnostics & Testing
Blood panels, microbiome tests, genetic analysis, and at-home health diagnostics.
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Diagnostics & TestingHome Blood Pressure Monitoring: The Complete Guide
Home blood pressure is one of the highest-ROI longevity measurements you can own. Clinic readings are noisy; guidelines endorse HBPM for diagnosis and treatment decisions. This guide covers technique, validated upper-arm devices, and when to call a human instead of taking a fifth inflation.
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Diagnostics & TestingPulse Oximeters at Home: The Complete Guide
A fingertip pulse oximeter estimates oxygen saturation and pulse in about ten seconds. It is a spot-check next to a home BP cuff — not a diagnosis, not a sleep-apnea test, and not permission to skip emergency care. This guide covers setup and the Zacurate 500DL as the cheap Amazon SKU.
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Diagnostics & TestingBiological Age Tests: The Complete Guide
Biological-age tests are a 2026 longevity trend: a spit or blood kit returns a number that is supposed to be younger or older than your birthday. The clocks were trained on different targets, so two labs can disagree. A lower score does not prove you will live longer. Repeat the same assay if you repeat it at all, and change ApoB, blood pressure, muscle, and sleep before you buy a second kit.
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Diagnostics & TestingContinuous Glucose Monitoring: The Complete Guide
A continuous glucose monitor (CGM) reveals how YOUR body responds to food in real-time, not population averages. Dave Asprey calls it the most impactful health tool he's used. This guide covers how CGMs work, what you'll learn, and how to use the data to optimize energy, weight, and long-term metabolic health.
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Diagnostics & TestingGut Microbiome: The Complete Guide
Your gut microbiome, 100 trillion bacteria, influences immunity, mood, metabolism, and inflammation. Bryan Johnson tests his monthly. This guide covers microbiome testing, evidence-based interventions, and what actually moves the needle vs marketing.
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Diagnostics & TestingBlood Panel Testing: The Complete Guide
Annual bloodwork is the foundation of data-driven biohacking. Peter Attia's framework prioritizes ApoB, insulin, HbA1c, and inflammatory markers over standard lipid panels. This guide covers what to test, how often, where to order, and how to interpret results.
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Diagnostics & TestingVO2 Max: The Complete Guide
VO₂ max — the maximum rate at which you can use oxygen — is one of the best-studied predictors of all-cause mortality. Peter Attia calls it a vital sign. This guide covers lab testing vs wearable estimates, what 'good' looks like by age, and a training mix of Zone 2 plus intervals.
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Diagnostics & TestingOral Microbiome: The Complete Guide
The oral microbiome is a distinct ecosystem — not just a subset of gut health. Oral dysbiosis links to gum disease, cardiovascular inflammation, and possibly cognitive markers. Nasal breathing, hygiene, and targeted oral care are actionable biohacks. This guide connects mouth tape, dental basics, and what actually moves oral bacteria.
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Diagnostics & TestingDEXA vs Ultrasound, Skinfold, and Waist Size
DEXA is the clinic scan that separates fat, lean tissue, and bone. Ultrasound and skinfold calipers estimate fat under the skin and are useful between scans. Waist circumference is the free check. A smart scale is only a trend line. Weight alone misleads people on GLP-1s, creatine, or a new lifting program.
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Diagnostics & TestingApoB & Lipids for Longevity: The Complete Guide
Cardiovascular disease remains a top killer; lipid panels are the cheapest longevity blood test most people skip interpreting correctly. This guide explains ApoB vs LDL-C, Lp(a), and lifestyle plus supplement levers — not statin prescribing.
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Diagnostics & TestingBone Density for Longevity: The Complete Guide
Bone is living tissue that responds to load. Osteoporosis and sarcopenia together drive falls, fractures, and loss of independence — the outcome Peter Attia calls 'the marginal decade.' This guide covers DEXA interpretation, resistance training, calcium/vitamin D/K2, and who needs medical treatment beyond lifestyle.
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Diagnostics & TestingGundry, Lectins & the Microbiome: The Complete Guide
Cardiac surgeon Steven Gundry built a massive following by linking lectins, leaky gut, and the microbiome to obesity and autoimmune disease. This guide explains his framework fairly, separates strong ideas from contested claims, includes practical recipes, and links his core books on Amazon.
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Diagnostics & TestingGrip Strength & Longevity: The Complete Guide
Handgrip strength is one of the cheapest, best-replicated biomarkers of all-cause mortality and functional aging. It is a marker of whole-body muscle and neuromuscular integrity — not a magic hand muscle. This guide covers how to measure it, what ‘good’ looks like, and how farmers carries and dead hangs beat cheap squeeze rings as the only plan.
Read guideDiagnostics & TestingDEXA Scan for Longevity: The Complete Guide
Dual-energy X-ray absorptiometry is the clinical standard for bone mineral density and a useful whole-body composition test (lean mass, fat, visceral adipose). Attia and sports-medicine clinics use it as a periodic snapshot. This guide covers what to book, how to prepare, how often to repeat, and what to do with the PDF.
Read guideDiagnostics & TestingHome Blood Pressure Monitoring: The Complete Guide
Home blood pressure is one of the highest-ROI longevity measurements you can own. Clinic readings are noisy; guidelines endorse HBPM for diagnosis and treatment decisions. This guide covers technique, validated upper-arm devices, and when to call a human instead of taking a fifth inflation.
Read guide
Diagnostics & TestingBenjamin Bikman & Why We Get Sick: The Complete Guide
Why We Get Sick (2020) is the mechanism book under a lot of metabolic Twitter. Bikman argues insulin resistance links diabetes, fatty liver, hypertension, and more. This guide extracts the labs and the boring plan — and tells you when to stay on the drugs you already have.
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Diagnostics & TestingEric Topol & Super Agers: The Complete Guide
Super Agers (2025) is Topol’s case that aging well is mostly not dying of the four chronic killers — and that incretins, earlier prevention, and better data are the real 2020s story. This guide extracts the clinic frame and sends you to GLP-1, ApoB, and Attia instead of a new powder.
Read guideDiagnostics & TestingPulse Oximeters at Home: The Complete Guide
A fingertip pulse oximeter estimates oxygen saturation and pulse in about ten seconds. It is a spot-check next to a home BP cuff — not a diagnosis, not a sleep-apnea test, and not permission to skip emergency care. This guide covers setup and the Zacurate 500DL as the cheap Amazon SKU.
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Diagnostics & TestingAndrew Steele & Ageless: The Complete Guide
Ageless (2021) is Steele’s civilian tour of aging as a biological target. Hallmarks, senescent cells, immune aging. This guide extracts the frame and sends you to Sinclair, Topol, and a physical — not a 12-bottle cart.
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Diagnostics & TestingRobert Lustig & Metabolical: The Complete Guide
Metabolical (2021) is Lustig’s case that chronic disease is more foodable than druggable. Two rules: protect the liver, feed the gut. This guide extracts those rules and sends you to Bikman, Fung, Means, and Fiber Fueled — not a keto-vs-vegan flame war.
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Diagnostics & TestingChris van Tulleken & Ultra-Processed People: The Complete Guide
Ultra-Processed People (2023) is physician Chris van Tulleken’s case that most modern calories are industrial formulations, not meals. He ate an 80% UPF month under observation. This guide extracts the shopping rule and sends you to Lustig, Guyenet, and Fiber Fueled — not a 30-day detox.
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Diagnostics & TestingStephan Guyenet & The Hungry Brain: The Complete Guide
The Hungry Brain is obesity researcher Stephan Guyenet on why ancient appetite circuits overeat modern food. The Amazon listing here is the Flatiron paperback (1250081203), not the 2017 hardcover. This guide pairs it with van Tulleken and Fung. It is not a macro war and not a GLP-1 stop card.
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Diagnostics & TestingElizabeth Blackburn & The Telomere Effect: The Complete Guide
The Telomere Effect (2017) is Nobel laureate Elizabeth Blackburn and Elissa Epel on telomeres as a marker, with levers they actually defend: sleep, movement, food, and stress. This guide pairs it with Sinclair and Steele as the cautious chapter. It is not a shopping list for telomerase activators.
Read guideDiagnostics & TestingBiological Age Tests: The Complete Guide
Biological-age tests are a 2026 longevity trend: a spit or blood kit returns a number that is supposed to be younger or older than your birthday. The clocks were trained on different targets, so two labs can disagree. A lower score does not prove you will live longer. Repeat the same assay if you repeat it at all, and change ApoB, blood pressure, muscle, and sleep before you buy a second kit.
Read guide
Diagnostics & TestingKlotho and Follistatin: The Complete Guide
Klotho and follistatin are having a 2026 moment because podcasts describe them as gene therapy that does not edit your genome. Klotho is tied, in observational human data, to cognition. Follistatin can grow muscle in animals. That is not an approved longevity treatment, and it is not a reason to fly somewhere for an injection outside normal drug oversight. This page names the claim and the skip.
Read guideDiagnostics & TestingPerimenopause and Healthspan: The Complete Guide
Women-specific tracking is one of the faster 2026 wellness shifts, and perimenopause is the part with real biology behind it. Estrogen decline changes bone, muscle, sleep, and lipids. The durable work is lifting, protein, a DEXA when it is due, and a clinician for hormone therapy. A cycle app does not replace that, and this page does not dose hormones.
Read guideDiagnostics & TestingBalance and Fall Prevention: The Complete Guide
Falls are how a lot of healthspan actually ends: fracture, immobility, then everything else. Balance is trainable and it moves faster than a DEXA score. This guide is single-leg stance, lower-body strength, grip, and when dizziness is a clinician problem. A Captain of Crush gripper is optional. A clear floor is not.
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