Apple Watch 4 is an iffy afib detector in people under age 55 - STAT

Apple Watch 4 is an iffy afib detector in people under age 55 - STAT

Opinion: The Apple Watch 4 is an iffy atrial fibrillation detector in those under age 55

By DANIEL YAZDI

ADOBE

The Apple Watch 4 can detect the harmful irregular heart rhythm called atrial fibrillation. But it's wrong 80 percent of the time in younger people.

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