Column Health & Medicine

Breath carries clues to gut health

A host of new products promise consumers insights into health and diet from simple exhalations

By Meghan Rosen

Senior Writer

A woman wearing a wool hat exhales a visible breath in the cold

Home-based breath tests seek to give consumers insight into their health via molecules wafting on the breath.

Cavan Images/Getty Images

Maybe you use an Apple Watch to count your steps or an Oura ring to track your sleep. Or maybe you rely on a glucose monitor to surveil your sugar levels.