such as modern smart rings Oura Ring 5 or Samsung Galaxy Ring can offer a lot of insight into heart health and sleep, but they’re still limited by what their optical sensors can track. According to a new study published Nature ConnectionsResearchers at the University of California, San Diego may have found a way forward by integrating a chemical sensor that examines finger sweat into a ring form factor to capture a more detailed picture of your health.
The prototype ring the researchers created, called the Continuous Health Analyzing Ring Module (CHARM) in the paper, clips onto a person’s finger and wirelessly shares data with a smartphone. Instead of invasively drawing blood or forcing the wearer to work to remove sweat, the ring uses an osmotic hydrogel based on the principles of osmosis to remove sweat naturally. The sweat is then passed through electrochemical sensors and measured four at a time to monitor changes in six biomarkers – glucose, ketones, ascorbic acid, uric acid, lactate and alcohol. Together, they can offer a different angle on the user’s response to nutrition and exercise. Continuous glucose and ketone monitoring can help determine the optimal insulin dose, especially for diabetics.
“Commercial rings only provide biophysical information, but they lack molecular information about biochemical markers that provide deeper insight into an individual’s health status,” said Tamoghna Saha, a postdoctoral researcher and first author of the study. statement.
In tests with participants with and without type 1 diabetes, CHARM’s sweat analysis was able to closely match glucose measurements from a continuous glucose monitor, and its ketone data matched the same as a traditional blood meter. It should be noted that while the ring appears to work, it needs to be “extensively validated” in a variety of clinical settings and across the “full glycemic spectrum” before it can be considered an alternative to existing agents. “Continuous multi-day monitoring will also require further advances in hydrogel engineering,” the study says, and things like battery performance — the ring lasts 12 hours on a charge but doesn’t include a convenient way to recharge it — also need to be improved.
Still, the idea of a future smart ring combining existing biophysical sensors with new chemical sensors is interesting, esp cracking non-invasive glucose monitoring remains a key goal for wearable manufacturers. CHARM’s gel-and-clip design has an inherent buzz that probably won’t fly with the likes of Apple or Samsung, but if the same techniques can be simplified, your finger could be more valuable real estate than your wrist for tracking your health.
