Resources we trust

Books, studies, tools, and lab providers worth your time. Curated, not affiliate-padded.

Books

• Outlive by Peter Attia — the modern standard text on longevity medicine. Bloodwork-heavy. Pragmatic.
• The Menopause Brain by Lisa Mosconi — the most accurate accessible account of perimenopause neurology.
• Why We Sleep by Matthew Walker — the popular sleep book. Some claims are over-stated; the core architecture chapters are excellent.
• The XX Brain by Lisa Mosconi — female-specific brain aging.
• The New Menopause by Mary Claire Haver — current clinical perspective on perimenopause management.

Lab providers (DTC bloodwork)

• Function Health — 100+ markers at one annual price; good reporting interface
• Marek Health — broader hormone panels; clinical interpretation included
• Quest Direct / Labcorp OnDemand — cheaper a la carte; you interpret
• InsideTracker — biomarker tracking with longitudinal trending

Trackers / tools

• Oura Ring — sleep architecture, HRV, body temp trends; the most accurate consumer sleep tracker we have tested
• Garmin watches — resting heart rate, training load, sleep stages; cheaper alternative
• Levels — continuous glucose monitor + app; expensive but educational for 2-4 weeks
• Cronometer — nutrition tracking with micronutrient detail; better than MyFitnessPal for the analytical user

Studies and references we cite often

• EMAS (European Male Ageing Study), NEJM 2010, 3,369 men — the modern reference for andropause
• WHI re-analyses 2013-2017 — HRT timing hypothesis
• Ohayon 2004 sleep meta-analysis — slow-wave sleep collapse with age
• STEP-1 (Wilding 2021), SURMOUNT-1 (Jastreboff 2022) — GLP-1 / GIP weight outcomes
• Massachusetts Male Aging Study (Feldman 2002) — longitudinal T trajectory

Disclosure

Some of these are affiliate-linked when we participate in their program; some are not. See the Affiliate Disclosure for our full policy. We do not include a product on this page because it pays well; we include it because we have evaluated the evidence and recommend it on its merits.