Apple's groundbreaking heart study signals a new era of medicine, and doctors are debating the results
Apple AAPL and researchers from Stanford Medicine released some new results from an eight-month study of more than 400,000 participants, who had access to Apple Watches to monitor their heart rhythm for signs of a medical condition known as atrial fibrillation. The watches are not the newest version, which has an electrocardiogram built-in, but are able to detect abnormal heartbeats.