(HealthDay News) -- What's causing your bad breath?

Here are some common triggers, courtesy of the American Dental Association:

• Bacteria in your mouth that feed on bits of food.
• Poor saliva production, which prevents your mouth from being naturally cleaned.
• Gum disease.
• Eating unpleasant-smelling foods, such as garlic or onions.
• Smoking.
• A medical problem, such as diabetes, GERD or a sinus condition.