How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Breath, not blood: device measures fat burning in exhaled air

calendar_today July 22, 2026 person Markus Gross, Corporate Communications domain eth-zurich

Researchers from ETH Zurich have developed a portable measuring device that detects the metabolic marker acetone in breath almost as accurately as a mass spectrometer. It can be used by laypeople and detects when the body starts burning fat when dieting or during exercise.

open_in_new Read original post