Rumors suggest an upcoming Apple Watch may measure blood pressure, following Samsung watches internationally. A study from 2018 showed wearables with AI can detect conditions like high blood pressure. The science behind wrist blood pressure involves pulse wave analysis, measuring factors like Pulse Wave Velocity and wave shape. Wrist monitors may need cuff calibrations and dietary choices impact blood pressure but are often counterintuitive. High blood pressure is a major heart attack risk factor, and controlling it can be difficult. Future wrist blood pressure sensors could provide real-time feedback on diet. As of September 2024, wrist blood pressure monitoring is still speculation.
https://www.empirical.health/blog/apple-watch-blood-pressure/