Finger Sweat Could Be the Huge Health Upgrade Smart Rings Need

Researchers at the University of California, San Diego developed a prototype smart ring called CHARM that uses finger sweat and electrochemical sensors to track biomarkers such as glucose, ketones, lactate, and alcohol. In early trials, its glucose and ketone readings closely matched existing monitoring tools, including continuous glucose monitors and blood meters. The article notes that the device still requires broader clinical validation and improvements in battery life, recharging, and hydrogel design before it could become a practical consumer product.

Summary generated July 29, 2026. AI summaries can make mistakes.