Nature.com July 23, 2026 • 07:19

Breathalyser can tell if you are burning fat from a single exhalation - Nature

Breathalyser can tell if you are burning fat from a single exhalation - Nature

The compact device can measure when the body is in ketosis and could help people to manage weight loss.

Molecules released in the breath can signal whether the body is burning fat.Credit: Mascot/Getty
A handheld breath test can accurately measure when the body is burning fat in real time1. The device … [+2604 chars]

More from Nature.com