Halitosis or bad breath is a common problem with most people. Bad breath is often caused because of bad oral habits like brushing and flossing, gum diseases, tongue debris, food lodged in between the teeth, badly fitted dentures and crowns, pulp and gum infections and inflammations and various other dental problems.
The cause of bad breath is also because of various gastrointestinal diseases and problems. The main culprit responsible for bad breath coming from the stomach is Helicobacter Pylori (H. Pylori). These bacteria are found in the stomach and intestine of humans. They produce certain volatile compounds like methyl mercaptan, hydrogen sulfide, dimethyl sulfide that causes unpleasant stinky smelly bad breath.
What causes bad breath from stomach?
(1) Bacteria inside the stomach
Helicobacter pylori are associated with bad breath commencing from the stomach. These bacteria are often detected in the mouth, but they are also found in the stomach. Infection from these bacteria can result in stomach diseases, like stomach ulcers, gastritis, duodenum ulcers, acid refluxes, dyspepsia, and bowel disorders and gastric cancers. Any of these stomach diseases leads to foul, bad breath.
(2) Imbalances in good and harmful bacteria
One more cause of bad breath commencing from the stomach is due to the imbalance in the number of bad and good bacteria. If the number of bad bacteria increases than the useful bacteria inside the stomach, it can result in poor digestion, leading to acid reflux and excessive growth of yeast, thereby causing fermentation. The consequence of fermentation can cause bad breath.
(3) Acid refluxes
Acid reflux is the most common reason for bad breath coming from the stomach. Acid reflux occurs when a valve known as esophageal sphincter muscles which control the emptying of the contents of the stomach, including digestive enzymes and stomach acids is impaired. Generally, this valve is accountable for opening and closing of lower esophagus that is emptied into the stomach.
But, in a malfunctioning or impaired valve, it fails to develop a barrier between the esophagus and the stomach, allowing the direct flow of contents of the stomach with the stomach acids, bacteria, and digestive enzymes. This mixture of acid travels to behind the mouth, oral cavity, and throat and causes bad acidic taste odor when breathing out the air.
(4) Insufficient hydrochloric acid
One more known cause of bad breath from the stomach is insufficient hydrochloric acid in the stomach. For proper digestion, sufficient hydrochloric acid is required. Hence, lack of hydrochloric acid can lead to poor digestion.
Undigested food pieces will ultimately flow straight into the intestine, the unbroken food particles can become decomposed (rancid), and produce obscene gas that upsurges and departs through the mouth when breathing out the air and thereby causing bad breath. In addition, irregular bowel movements permit these undigested food particles to putrefy and release bad smelling gas and hence causing constipation.
(5) Intestinal parasites
Bad breath can also be caused because of intestinal parasites. Symptoms include bowel disorders. Bad breath can from poorly digested food contents in the stomach or it might be a sign of serious underlying gastrointestinal diseases like kidney or liver diseases and stomach cancers. Hence, it is very crucial to evaluate the exact reason for bad breath and cure the underlying cause.