what causes bad breath？

Causes of bad breath
1. Oral diseases: People suffering from dental caries, gingivitis, periodontitis, oral mucositis, tooth decay, periodontal disease and other oral diseases are prone to bacteria, especially anaerobic bacteria, which decompose and produce sulfuric acid. The food emits a rotten smell, resulting in bad breath.
2. Gastrointestinal diseases, such as peptic ulcer, chronic gastritis, functional dyspepsia, etc., may be accompanied by bad breath. Recently, we have also found that the incidence of halitosis in patients with Helicobacter pylori infection, which causes many gastric diseases, is significantly higher than that in uninfected patients, and the symptoms of halitosis are significantly reduced after eradication of Helicobacter pylori. The reason may be that Helicobacter pylori infection directly produces sulfide, which causes bad breath.
3. People who smoke, drink alcohol, drink coffee, and often eat spicy food such as onions, garlic, leeks, or stinky tofu, rotten eggs, etc., are also prone to bad breath.
4. Diet to lose weight, or unable to eat due to illness, or the salivary gland function of the elderly is reduced, and women have endocrine disorders during menstruation, resulting in reduced saliva secretion, which is conducive to the growth of anaerobic bacteria, so bad breath occurs.
5. Bad breath in young girls: Some women in puberty have insufficiency of ovaries and low levels of sex hormones, the resistance of oral tissues is reduced, and they are easily infected with bacteria, resulting in bad breath.
6. Drugs that can reduce saliva secretion, such as certain sedatives, hypotensive drugs, atropine drugs, diuretics, and traditional Chinese medicines with warming and tonic effects.
7. Patients with diabetic ketoacidosis, hepatic coma, and some respiratory diseases such as bronchitis, bronchiectasis, sinusitis, pharyngitis, tonsillitis, lung cysts, etc., may also cause bad breath.
8. Long-term constipation will cause bad breath, abdominal distension, loss of appetite, irritability and other autopoisoning symptoms because the harmful substances produced in the body cannot be discharged in time and are absorbed into the blood.
9. Dinner is too “heavy”, overeating or eating meat, the proportion of greasy food is too large or the amount of hot and irritating seasoning is too large, the fragrance is too strong, the light is not enough, the time between dinner and sleep is too short, and the stomach is in the stomach when sleeping There is still too much food, etc.
10. Excessive psychological pressure, frequent mental stress causes the body’s parasympathetic nerves to be in a state of excitement, and the digestive glands, especially the salivary glands, decrease in secretion reflexively, resulting in dry mouth, which is conducive to the growth of anaerobic bacteria, resulting in bad breath.