Bad breath—also known as halitosis—can be an embarrassing problem, and it is often caused by a variety of everyday factors.

An international study has found how the microbes in our mouths are connected to the lifestyles we lead and the food we eat.

Bad breath is often caused by bacteria in your mouth that gives off noxious odors or gases that smell like sulfur. Bad breath, medically called halitosis, can result from poor dental health habits ...