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 a regular smartwatch's pulse and motion sensors, with no cuff needed for calibration, according to a study published in Nature. In a study of 196 people across five US research sites, the watch identified 65.8 percent of those with high blood pressure compared to 55.3 percent for 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 remains a research project and does not replace a diagnosis.