Eric Topol: Apple Watch Readiness Score and 24x HRV Data Lack Evidence of Health Benefits
EricTopol · x · 2026-10-05
Eric Topol's Ground Truths newsletter questions Apple's September 9 revamp of the Apple Watch health sensing system, which introduced a 0-10 Readiness score and boosted HRV sampling 24-fold in a bid to compete with other consumer wearables.
With over 100 million American adults now using wearables, HRV and Readiness scores are marketed as markers of autonomic nervous system health, future disease risk, and even biological age — yet none of these benefits has been proven. Topol reviews three decades of HRV research: the metric reflects interplay between sympathetic and parasympathetic inputs, people with identical heart rates can have very different HRV, and it alone is inadequate for judging autonomic function. Some studies link low HRV to clinical outcomes, but the evidence base for the new scores remains full of holes.
More from Embodied
- Samsung's Fold8 foldable geometry praised as an ideal device for running AI agents — andreisavu · 2026-10-05
- University of Tokyo grows living human skin on a robotic finger that self-heals in a week — bennash · 2026-10-05
- DIY air hockey robot with upgraded motors is now beating its own creator — bennash · 2026-10-05
- 12 years ago robots already built structures while climbing them: the termite-inspired Science 2014 paper — tomssilver · 2026-10-05
- China shipped 97% of the world's humanoid robots in H1 2026 — the race is a data flywheel — ingliguori · 2026-10-05
- First glimpses of machine RSI: 4 self-built machines, 8 more by December — hudzah · 2026-10-05