Five Apple Watch models are able to measure your blood pressure in order to generate alerts for possible hypertension. However, they do not provide your actual blood pressure readings.
A few smart rings and other fitness devices do so, but rely on regular calibration with a traditional cuff monitor. The upcoming Signal Ring says that it delivers full blood pressure measurements without any calibration, and that a trial of thousands of people backs the claim …
The ‘silent killer’
Both abnormally high blood pressure (hypertension) and low blood pressure (hypotension) can pose significant health risks.
Of the two, hypertension is the most dangerous, referred to as a “silent killer” because It can result in severe and irreversible damage to your arteries, heart and brain without any noticeable symptoms. The condition often isn’t discovered until it causes a heart attack or stroke.
