Breathalyzer-style device sniffs out fasting state in routine clinic study

This study tested whether a handheld electronic device called the Aeonose could tell if a person had been fasting just by analyzing their breath. Researchers collected breath samples from 879 adults before and after routine endoscopy procedures. The goal was to see if the device could reliably distinguish fasting from non-fasting states using exhaled compounds, with no risk to participants.