A regular smartwatch spotted more hidden high blood pressure than a check-up did
Google researchers built an AI that reads the pulse and motion sensors already in a smartwatch, with no blood pressure cuff needed. In a study of 196 people at five US sites, it flagged 65.8% of those with high blood pressure, compared with 55.3% for a standard reading at the doctor's office.
Why it matters
More than a billion people have high blood pressure, and over half of them don't know it, because it rarely causes symptoms. A watch that quietly suggests you get checked could catch it long before it does damage.
Your watch already counts your steps. It might soon tell you something more useful.