What are the causes of bad breath?

　　Bad breath It refers to an unpleasant and abnormal odor in the mouth. Normal people almost always have a certain smell in their mouths, but after eating garlic, onions, leeks, mutton, fermented bean curd and other foods, the abnormal smell in the mouth will become more serious. These abnormal smells can be eliminated or reduced by brushing your teeth and gargling, so they cannot be regarded as pathological bad breath.

　　1. Observations show that the number of intestinal Escherichia coli in patients with severe halitosis is at least 200 times higher than that in other people.

　　2. Observations show that the number of Helicobacter pylori in patients with severe halitosis is at least 150 times higher than that in other people.

　　3. If patients with severe bad breath are not treated in time, their gastritis, gastric ulcer, and enteritis will often worsen significantly.

　　4. If patients with severe bad breath are not treated in time, the number of oral flora will greatly increase, causing periodontitis, gingivitis, Oral ulcers Happens frequently.