Halitosis can also be a symptom of certain diseases.

Halitosis can also be a symptom of certain diseases that affect the whole body, such as liver disease, poorly controlled diabetes, renal failure or a disease of the lungs or the mouth. But the main reason is undoubtedly the combination of food waste between the teeth and a bad or poor oral hygiene, which creates a good breeding ground for bacteria and thus for the infections. This problem is solved by brushing your teeth properly and using dental floss. Bad breath is rarely caused by intestinal problems, because the sphincter at the entrance of the stomach is permanently closed and only opens during the intake of food, so they can not climb up the mouth odors. Indeed, when in the esophagus or stomach is a tumor, secretes a liquid is nauseating taste or malodorous gas in the mouth.