health
Modern smartwatches can now take a basic heart reading from your wrist and warn you of an irregular rhythm that often goes completely unnoticed.
Smartwatches with ECG features are designed to flag atrial fibrillation, an irregular heart rhythm that raises the risk of stroke and can produce no noticeable symptoms at all, which is exactly why a passive wrist sensor catching it unexpectedly can be so valuable for prompting someone to seek medical attention.
A broken bone would be detected through imaging like an X-ray, not through an electrical heart-rhythm reading from a wrist sensor. High cholesterol is measured through a blood test, an entirely different kind of health data that a watch's optical or electrical sensors cannot directly detect.
These watch alerts are explicitly not medical diagnoses, they simply flag a pattern worth checking, but they've already prompted many wearers who had no symptoms at all to see a doctor and get a proper clinical diagnosis confirmed.
health
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