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New 'Smart Headband' Measures Sweat To Monitor Health Risks

by Shirley Johanna on January 28, 2016 at 6:39 PM
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New 'Smart Headband' Measures Sweat To Monitor Health Risks

Wristbands that track the number of calories burned, heart beat and number of steps taken have become so popular they are now part of many a smartphone contract.

But what they cannot do is measure health at the molecular level, meaning what is happening inside the body.

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Now a device developed by researchers and engineers from the universities of California in Berkeley and Stanford promises to do just that, by analyzing the sweat.

The wearable "smart headband" or "smart wristband" is made of flexible sensors and microprocessors that stick to the skin.

It analyses chemicals in sweat, including levels of sodium, glucose, potassium, lactate, as well as skin temperature - indicators of muscle fatigue, dehydration or dangerously high body temperature.
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The data is relayed in real-time to a smartphone app.

"Human sweat contains physiologically rich information, thus making it an attractive body fluid for non-invasive wearable sensors," said Ali Javey, a University of California professor of electrical engineering and computer sciences.

He was the lead author of a paper published Wednesday in the journal Nature.

Sweat is already used to diagnose certain diseases or detect drug use, but needs to be collected and sent off for analysis in a lab.

Real-time, continuous analysis has proven difficult due to a lack of flexible, lightweight and wearable electronic monitors.

The new device combines all these features, and may also open up other avenues, the study authors said.

"With this noninvasive technology, someday it may be possible to know what's going on physiologically without needle sticks or attaching little, disposable cups on you," said co-author George Brooks, an exercise physiologist.

Jason Heikenfeld, a computing and electrical engineering expert from the University of Cincinnati who did not take part in the study, said this was "a real leap forward for wearable devices."

The gadget "might one day be used to monitor the amount of active drug in a patient's blood -- helping to avoid rises and falls in drug levels between doses," he wrote in a comment carried by Nature.

Source: AFP
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