The smart collar can track blood sugar through sweat

Jewelry of the future can be used not only as a fashion accessory, but also to monitor certain aspects of a person’s health, thanks to new research from Ohio State University. Researchers have developed a device that can be worn around the neck to monitor a person’s glucose levels from sweat excreted when they exercise, they said. It could one day be used as a way to help people with diabetes track their blood sugar without painful pinpricks, they said. the said “smart collar” includes a typical clasp and pendant, but also includes a wireless, battery-free biochemical sensor that researchers used to measure test subjects’ blood sugar levels through their sweat, they said.

“Sweat actually contains hundreds of biomarkers that can reveal very important information about our health,” said Jinghua Li, assistant professor of materials science and engineering at Ohio State. article in Ohio State News. “The next generation of biosensors will be so highly bio-intuitive and non-invasive that we will be able to detect key information contained in a person’s bodily fluids.”

Indeed, scientists discover that human perspiration is a useful natural component for the design of new wearable devices. A research team from Penn State University has already used sweat to measure glucose with the development of a non-invasive patch-type sensor made with a nickel-gold alloy.

Meanwhile, engineers at the University of California (UC) San Diego developed a portable microgrid that harvests energy from various renewable sources, including sweat, to power small electronic devices.

Smart collar design

Although the smart collar designed by the Ohio State team does not use sweat to power the device, it operates without a battery using a resonance circuit, which reflects radio frequency signals sent from a reader system. external for food, the researchers said. The sensor is made of lightweight, ultra-thin materials that give it flexibility and also includes a protective layer that protects both the device and someone’s skin, they said.

Researchers tested the collar on study participants who cycled indoors for 30 minutes, then took a 15-minute break during which they drank sugary drinks before returning to the bikes.

The results of the sensor demonstrated that it could pick up the increase in glucose levels resulting from the consumption of sugary drinks, which the scientists say is promising for its potential to also detect other chemical biomarkers in sweat, the researchers said. Additionally, the device didn’t require a lot of sweat to measure participants’ blood sugar levels, they said.

The researchers reported the results of their study in a paper in the review Scientists progress.

The team will continue to work on the smart collar to create a viable commercial product, the researchers said. It’s even possible that future, more miniaturized iterations of the sensor could be integrated into other jewelry, such as earrings or even implantable devices, Li said. seamlessly integrated into our personal belongings,” she said in the article.

Rachel J. Bradford