Breathalyzer can 'sniff out' when your body starts burning fat

medicalxpress - Researchers have developed a breath detector with a chemical sensor that sniffs out when your body is burning fat through a single exhale. Reporting in Device, the handheld, smartphone-assisted device measures acetone—a molecule that is released into the …

AI Summary: Engineers developed a breath-based detector that pinpoints when the body shifts to fat oxidation, and shrank it down to a phone-compatible breathalyser. The device measures volatile markers in exhaled breath to indicate metabolic state, enabling noninvasive, real‑time monitoring of fat burning for weight-loss or metabolic research — because your phone now judges your dinner choices.