Gastrointestinal tract.

The contribution of pathological states below the union gastro-esophageal to halitosis is not a universally accepted concept. Numerous reports in the literature describing the association of halitosis to gastric carcinoma, the hiatus hernia, steno sis of the pylorus, enteric infection. The smells of gastric / stomach are not considered contributing factors to oral odor, this is because the esophagus is usually a tube collapsed and only when they burp odorous gases are exhaled through the mouth from the stomach.
Contrary to what is thought that bad breath originates in the gastro intestinal tract is considered very rare, the esophagus is usually collapsed and closed, and although the occasional burp can bring smell from the stomach the possibility of continuous exhaust air is remote. Other non-oral abnormalities that cause odors are pathological: chronic renal failure (fishy smell), cirrhosis of the liver, liver , several carcinomas, metabolic dysfunctions and biochemical disorders can lead to bad breath the weight loss, fever, joint pain and alcohol abuse suggest a systemic primary cause for halitosis, as well as sepsis and dehydration, and agranulocytosis carcinoma, however, all these diseases only affect a small percentage of people who experience oral odor.