A woman sleeping in bed

Medicine’s Andres Pinto discussed the science behind morning breath

This is why your breath stinks in the morning, according to a periodontist

Fatherly: Andres Pinto, professor at the School of Dental Medicine, weighed in on morning breath—and how to beat bad breath in the long term. “Almost half of the U.S. population suffers from some degree of periodontal disease,” Pinto said.