Causes of Bad Breath Due to Helicobacter pylori Infection

The main reasons for bad breath caused by Helicobacter pylori infection are as follows: 1. Bacterial characteristics: Helicobacter pylori contains urease, which can decompose urea in the stomach and produce amine substances with an irritating odor, constituting the primary source of bad breath. 2. Oral environment: Helicobacter pylori can exist in saliva and dental plaque. Poor oral hygiene allows food debris to interact with bacteria, producing hydrogen sulfide, which worsens bad breath and may result in an odor resembling rotten eggs. 3. Gastric diseases: Helicobacter pylori infection often leads to chronic gastritis, gastric ulcers, and other conditions. Damage to the gastric mucosa and reduced gastric motility prolong the retention time of food in the stomach, leading to decomposition and the production of unpleasant odors that are exhaled through the mouth. 4. Medication factors: Some medications, including certain antibiotics, may also cause bad breath as a side effect. If related symptoms occur, it is recommended to seek medical treatment.