When you were growing up, the closest you ever got to a personal medical data-collection device was probably a thermometer, or a bathroom scale. But these days, health trackers are a lot more sophisticated – and a lot more wearable. Smartwatches from companies like Fitbit and Apple are teeming with tiny sensors that display their findings on your smartphone. They can track heart rate, irregular heartbeats, blood oxygen levels, noise notifications, and even hand-washing. And, of course, your pulse rate. Dr. Sumbul Desai, vice president of health at Apple, demonstrated to correspondent David Pogue how an Apple Watch can warn you about dangerous sound levels, measure your cardio fitness, and even perform an electrocardiogram. “And if you want to choose to share this with your doctor, you can hit ‘export to PDF,'” she said. But the most life-changing talent of the latest smartwatches is brand new: They can give you early warning of medical problems. “For example, if you’re sleeping more or sleeping less than you used to, if your heart rate is at a different baseline heart rate than it was, those are early signs of things that may be going on,” Desai said. Pogue asked, “Without my having… Read full this story
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