Apple Watch, HealthKit, and Tim Cook's Health-Care Strategy - Businessweek

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"Chronic disease accounts for three-fourths of U.S. health-care costs, and it’s largely driven by smoking, diet, and physical activity, all behaviors people can modify. The question is whether an Apple Watch or any gadget can actually goad people into moving—or simply provide a way for those already motivated to work out to measure it more precisely. We don’t know yet. Most Americans are overweight or obese, and it’s going to take much more than a buzzing wristwatch to dent our weight problems.

But at the margin, for some people, the Apple Watch might help. If not, at least you can still send goofy emoji to your friends."

Apple Watch, HealthKit, and Tim Cook's Health-Care Strategy - Businessweek