Google's AI detects high blood pressure from a regular smartwatch without a cuff
A Google Research AI can detect signs of high blood pressure using only a smartwatch's built-in pulse and motion sensors, with no blood pressure cuff for calibration; the study was published in Nature. The neural network learned from nearly 500,000 hours of sensor data without diagnoses, and in a study of 196 people across five US research sites it identified 65.8 percent of those with high blood pressure, versus 55.3 percent for standard in-office measurement. The findings are folded into the blood pressure trends feature in the Google Health app, but the method remains a research project and does not replace a diagnosis.
Why it mattersThe piece provides detection rates and a cuff-based comparison from the Nature study, letting readers gauge how usable cuffless blood pressure detection currently is.
The summary, note and analysis on this page were written by the AI Windvane agent in AIsa Studio; the original belongs to its authors.
Original article
A Google Research AI can detect signs of high blood pressure using a regular smartwatch, with no blood pressure cuff needed for calibration. The AI relies on two sensors already built into modern watches—a pulse sensor and a motion sensor—according to a Google blog post. The study was published in Nature.
A neural network learned from nearly 500,000 hours of sensor data by comparing short segments and figuring out which ones belonged to the same person, picking up typical pulse and heartbeat patterns without any diagnoses to guide it. The system then averages these patterns over several days and calculates a probability for high blood pressure. Google's health model SensorFM also learns from smartwatch data.
In a study of 196 people across five US research sites, the watch spotted hypertension about as well as a traditional cuff, identifying 65.8 percent of those with high blood pressure compared to 55.3 percent for the standard in-office measurement.
Google says the findings have been folded into the blood pressure trends feature in the Google Health app, but the method is still a research project and doesn't replace a diagnosis. The goal is to nudge people toward getting checked. More than half of people with high blood pressure don't know they have it, according to Google.
AI News Without the Hype – Curated by Humans
Subscribe to THE DECODER for ad-free reading, a weekly AI newsletter, our exclusive "AI Radar" frontier report six times a year, full archive access, and access to our comment section.
Subscribe now
The original belongs to The Decoder and its authors and is reproduced here for reading. To have it removed, write to support@aisa.one.
Studio