THE VANGUARD BLOG
Physician-curated deep dives into the science of men's health optimization.
Monograph
VO2max — maximum oxygen consumption during exhaustive exercise — is the single most predictive fitness metric for all-cause mortality across multiple longitudinal cohort studies. Companion to the existing Vanguard VO2max Maximization Protocols…
30 May 2026
Monograph
Heart rate variability has become one of the most-marketed metrics in consumer wearable health tracking. The underlying physiology is real and well-characterized: variation in time between successive heartbeats reflects autonomic nervous system…
30 May 2026
Monograph
Lumen is a consumer-direct handheld device that measures CO₂ concentration in a single exhaled breath, computes the respiratory exchange ratio (RER), and reports a number indicating whether the user is metabolically in a fat-burning or…
30 May 2026
Monograph
Active mattress temperature control — water-circulated cooling and heating beneath a fitted topper — has emerged from a niche sleep-optimization product category into one of the most-evidenced consumer sleep interventions of the past decade. The…
30 May 2026
Monograph
The wearable category dominant in the optimization community in 2026 reduces to four products: the Oura Ring Generation 4, the Whoop 4.0 (with the newer 5.0 sensor band launching), the Apple Watch Series 10, and the Garmin Fenix/Forerunner line.…
30 May 2026
Monograph
Steroid hormone measurement in blood is dominated by two distinct technologies. Immunoassay — the standard method used by most commercial U.S. clinical laboratories for testosterone, estradiol, cortisol, and most other steroid hormones — uses…
30 May 2026
Monograph
Dual-energy X-ray absorptiometry (DEXA, sometimes written DXA) is the gold-standard imaging modality for measuring bone mineral density and the most accurate consumer-accessible method for measuring body composition (fat mass, lean mass, visceral…
30 May 2026
Monograph
Full-body magnetic resonance imaging — sold under brands including Prenuvo, Ezra, and Q Bio — is a consumer-direct whole-body MRI scan marketed for early detection of cancer and incidental findings. The scans take approximately 45–60 minutes,…
30 May 2026
Monograph
Galleri is a blood test developed by GRAIL (now an independent public company after spin-off from Illumina) that detects cell-free DNA shed by cancer into the circulation. Using methylation pattern analysis on a panel of ~100,000 genomic sites,…
30 May 2026
Monograph
Cleerly is an AI-powered analysis platform applied to coronary CT angiography (CCTA), the contrast-enhanced cardiac CT that visualizes both calcified and non-calcified plaque in the coronary arteries. Where coronary artery calcium (CAC) scoring…
30 May 2026
Monograph
"Biological age" — as distinct from chronological age — has become one of the most-marketed concepts in the longevity consumer space. The underlying science is real and increasingly substantial: it is now well-established that certain DNA…
29 May 2026
Monograph
Continuous glucose monitoring devices have been the standard of care in insulin-dependent diabetes for over a decade — Dexcom and Abbott Libre systems track interstitial glucose every 1–15 minutes via a small subcutaneous sensor worn for 10–15 days,…
29 May 2026
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