What health problems are associated with bad breath?

Persistent bad breath or bad taste in your mouth may be warning signs of

periodontal disease. Periodontal disease is caused by the buildup of plaque

on teeth. The bacteria cause toxins or poisons to form in the mouth, which

irritate the gums. Damage can occur to the gum and jawbone as periodontal

disease progresses.

The medical condition dry mouth can also cause bad breath. Saliva is

necessary to moisten and cleanse the mouth by neutralizing acids produced by

plaque and washing away dead cells that accumulate on the tongue, gums, and

cheeks. If not removed, these cells decompose and can cause bad breath. Dry

mouth may be caused by the side effects of various medications, salivary

gland problems, or continuous breathing through the mouth.

Other diseases and illnesses can also cause bad breath. Some of these medical

problems include: respiratory tract infections (for example, infections

involving the nose, throat, windpipe, lungs); chronic sinusitis; postnasal

drip; chronic bronchitis; diabetes; gastrointestinal disturbances; or liver

or kidney problems