Imagine being able to measure your blood sugar levels, know if you’ve had too much to drink, and track your muscle fatigue during a workout, all in one small device worn on your skin. Engineers at the University of California San Diego have developed a prototype of such a wearable that can continuously monitor several health stats — glucose, alcohol, and lactate levels — simultaneously in real-time.
The device is about the size of a stack of six quarters. It is applied to the skin through a Velcro-like patch of microneedles, that are each about one-fifth the width of a human hair...
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