Garmin Fenix 8 Update 23.40 Fixes the Dead Heart Rate Sensor
Garmin Fenix 8 update 23.40 fixes the heart rate sensor failure from 23.39, but reached only 20% of watches at first. What broke, and what owners should do.
Apple Watch on a Huawei Phone: Notifications Yes, Health Data No
An Apple Watch can now show calls and texts from a Huawei phone via a HarmonyOS app. What works, why health data stays on the iPhone, and who it suits.
Garmin MARQ Gen 3 Review: Fenix 9 Features at $2,500 and Up
The Garmin MARQ Gen 3 adds LTE, satellite SOS, a flashlight and a 3,000-nit display from $2,500. DC Rainmaker's tests, and who should pay over a Fenix 9.
Polar H10 Resonance Breathing: SYMPATHETIC Adds HRV and ECG
SYMPATHETIC is a free iPhone app that pairs Polar H10 resonance breathing with live HRV and ECG views. What it measures, its limits, and who it suits.
Fitbit Edge: The Charge 6 Successor Fixes GPS but Costs $179
The Fitbit Edge replaces the Charge 6 with working GPS, an altimeter and a swappable battery, but drops Google Pay and costs $179. Who should upgrade.
Mito's $249 Heart Scan: What a Coronary Calcium Score Actually Tells You
Mito Health now offers a $249 coronary artery calcium scan, which shows existing arterial plaque. Who the 2026 ACC/AHA guidelines say should consider one.
Best Outdoor Saunas: What to Know Before You Build (Site Prep, Foundation, and Hardwired 240V)
An outdoor sauna is a building project: site prep, foundation, a 240V circuit, and drainage come first. How to choose an outdoor sauna for your site.
Choose Your Home Sauna Heat System Before You Choose a Brand
Traditional, infrared, hybrid, and portable home saunas solve different problems. Why choosing the heat system before the brand avoids the costliest mistake.
Blood Pressure and Longevity: What Peter Attia's AMA #48 Gets Right About Measurement
Blood pressure is one of three primary drivers of atherosclerosis — yet most people check it once a year. Attia's AMA #48 rebroadcast makes the case for treating it as a daily metric.
Zone 2 Training: Why Time-Constrained Athletes May Be Better Off Skipping It
Peter Attia reframes Zone 2 as a volume tool, not a metabolic must-do — and the implications for busy people are bigger than expected.
KardiaMobile 6L: The Study That Found Twice as Many Arrhythmias as Hospital Monitors
A University of Rochester cohort study published in JACC Advances found AliveCor's KardiaMobile 6L detected nearly twice the arrhythmia rate of traditional short-duration ECG monitors in 350 patients over 30 days.
GDF-15 and P-Tau217: The Biomarkers That Warn You Before You Feel Anything
New biomarker research is shifting the question from 'what's wrong?' to 'what's coming?' GDF-15 as a cellular stress signal and p-tau217 for pre-symptomatic Alzheimer's risk represent a new category of early detection — but their limitations matter as much as their promise.
GDF-15 and P-tau217: The Biomarkers That Signal Breakdown Before You Feel It
Two biomarkers — GDF-15 for cellular stress and P-tau217 for Alzheimer's risk — can flag physiological strain years before symptoms appear. Here's what they measure, what trends reveal, and why a single reading misses the point.
NMR Blood Testing: One Blood Sample, Four Different Risk Scores
A single NMR blood scan reveals heart disease, insulin resistance, inflammation, and mortality risk — the inventor explains why one draw beats a standard panel.
Peter Attia's Framework for Environmental Threats to Longevity: Air, Noise, and Light
AMA #87 applies Attia's 80/20 principle to chronic environmental exposures — PM2.5, noise, and artificial light — and which interventions actually move the longevity needle.
Heat Training Boosts Hemoglobin — But Can It Make You Faster?
Heat training reliably raises hemoglobin mass by 2–5%. But 5 of 6 trials find no clear performance payoff in VO₂max or sport results. Here's what the evidence actually shows.
Scientists Reversed 'Permanent' Aging Damage in Human Tissue. Here's What Was Fixed.
A Nature Communications study showed an engineered enzyme (CMLase) removed advanced glycation end products from human arterial, skin, and lens tissue — reversing damage long considered irreversible.
Google's SensorFM: What a 1-Trillion-Minute Wearable Dataset Changes
Google's new foundation model for wearable sensors outperformed prior models on 34 of 35 health tasks — and what it means for the future of passive health monitoring.
Medtronic and Corsano Are Building the Hospital-to-Home Wearable Stack
Medtronic's integration of Corsano's FDA-cleared multi-parameter wearable into its HealthCast platform extends clinical monitoring from pre-op through home recovery — targeting alarm fatigue along the way.
GARM's Klotho Longevity Residency Brought 22 Participants to Honduras. Here's What They're Testing.
A four-day longevity residency at the Kimpton Grand Roatán included a proprietary Klotho intervention, blood sampling before and after, and researchers from MIT and Harvard. GARM is betting that Klotho is the next longevity biomarker to watch.
Peter Attia: High HDL Cholesterol Doesn't Protect Your Heart. It Might Hurt It.
HDL-C has been called 'good cholesterol' for decades. Peter Attia's latest analysis unpacks why the clinical evidence never supported the label — and why very high HDL-C levels may signal elevated cardiovascular risk, not lower.
Sky Labs' CART BP Pro Ring Heads to Europe After 260K+ South Korean Prescriptions
Sky Labs is launching its cuffless blood pressure monitoring ring in Europe and the UK, backed by CE-MDR certification and a 260,000+ prescription track record in South Korea.
VERVE-102 and the Beginning of the End of Atherosclerosis
A Phase I trial published in the New England Journal of Medicine shows VERVE-102, a one-time base-editing gene therapy, can cut PCSK9 protein levels by up to 88% and LDL cholesterol by up to 62% — potentially permanently — in high-risk cardiovascular patients.
Scribe Therapeutics' STX-1150: Silencing PCSK9 Epigenetically Without Editing Your DNA
Scribe's STX-1150 cuts LDL 50%+ in primates for 18 months from a single dose — silencing PCSK9 epigenetically, not by altering the DNA sequence itself.
Diathrive + KardiaComplete: The Cardiometabolic Stack Getting FDA-Grade ECG Into Diabetes Care
People with Type 2 diabetes face 2-3x higher AFib risk, yet most digital health platforms treat heart and glucose monitoring separately. The Diathrive-KardiaComplete integration changes that.
Sky Labs CART: A Cuffless BP Ring With Real Regulatory Approval
Sky Labs' CART ring cleared UK MHRA and EU CE-MDR after 1,700 Korean hospitals and 150,000 prescriptions. What cuffless 24-hour BP monitoring actually requires.
Peter Attia AMA #84: Family History, NAD Skepticism, and Dementia Risk
Peter Attia AMA #84: why family health history outperforms genetic testing, his stance on NAD supplements, and minimum effective strength training dose.
Lipid-Lowering Pharmacotherapy: The Decision That Actually Determines Outcomes
92 million Americans take statins, but which lipid-lowering drug you take matters less than matching it to your dominant cholesterol pathway. Here's the framework.
Obicetrapib: The Drug Targeting Both Heart Disease and Alzheimer's at Once
A CETP inhibitor in late-stage trials cut LDL by up to 50% while reducing Alzheimer's biomarkers. The BROADWAY trial data may represent a new category of longevity drug.