Can wearable sensors tell when you’re sick?

In this photo provided by Steve Fisch, Michael Snyder, professor and chair of genetics at the Stanford University School of Medicine sports wearable gadgets. Wearable gadgets gave a Snyder an early warning that he was getting sick before he ever felt any symptoms of Lyme disease. (Steve Fisch via AP)

It may one day be possible to spot illness the same way many of us already track our exercise habits and sleep patterns: with wearable sensors, researchers say. 

In a new study, 60 people wore devices that collected more than 250,000 measurements a day on things like heart rate, oxygen in the blood, activity levels, calories expended, sleep patterns and skin temperature.