Dr. Wang Wei of the Department of Stomatology: What disease can cause bad breath

Bad breath is a common disease, which can affect the patient's interpersonal communication and can also make the patient feel inferior. Some diseases can also cause bad breath, so what diseases can cause bad breath?

1. Gastrointestinal diseases

If you suffer from gastrointestinal diseases such as gastric ulcers or chronic gastritis, food cannot be digested normally after entering the gastrointestinal tract, so it will stay in the stomach for a long time and produce a foul odor. This smell is emitted through the mouth, at which point it becomes sour. In addition to these two stomach diseases, Helicobacter pylori infection can also cause bad breath.

2. Diabetic pyruvate poisoning

If you have diabetes with the smell of rotten apples in your mouth, you should be careful about diabetic pyruvate poisoning. When blood sugar rises and is not controlled in time, the fat in the body begins to break down, forming ketone bodies. As the ketone body increases, it produces a smell similar to that of rotten apples. If this odor can be exhaled from the mouth, it means that the concentration of ketone in the patient's body has always been high, so it is necessary to go to the hospital in time to prevent diabetic pyruvate poisoning.

3. Diseases of the upper respiratory tract

Upper respiratory tract diseases can also cause bad breath, which is a fishy smell. After suffering from respiratory diseases such as sinusitis, tonsillitis and pharyngitis, the body secretes some protein mucus. Some of this mucus is excreted in the form of a snot, while others enter the base of the tongue and oropharynx. After decomposition, it becomes a fishy smell that emanates from the mouth.

4. Liver disease

For people with liver failure, the detoxification function of the liver will be greatly weakened, and the ability to break down toxins will also be reduced, resulting in an increase in blood ammonia. When the blood ammonia level reaches a certain level, the mouth emits a smell similar to excrement.