6. Dry mouth
Dry mouth, or xerostomia, occurs when the flow of saliva decreases in your mouth. Saliva is the body’s natural method of cleansing the mouth and removing food particles. According to the American Dental Association, medical conditions such as salivary gland problems or continuously breathing through your mouth can lead to bad breath. Chewing sugarless gum makes you salivate which will help wash away bacteria in your mouth leaving your breath minty fresh.