Physiological halitosis is caused by the stimulation of eating some foods, such as onions, ginger, garlic and leeks. Smoking, drinking alcohol and drinking coffee can also cause bad breath. Fatty diet, excessive pressure of staying up late, endocrine disorders during menstruation, etc. can also lead to bad breath.
Pathological halitosis is caused by some diseases. Including oral diseases, nasopharyngeal diseases, digestive system or other parts of the body diseases. The most common oral diseases include dental caries, gingivitis, periodontitis, oral mucositis and gingival bleeding during pregnancy. Bacteria in the mouth will decompose food, epithelial cells shed from the mouth or proteins in the blood will produce sulfide and other gases, which will give off a putrid taste and produce bad breath. Local causes include sinusitis and tonsillitis, which can also induce bad breath. Gastrointestinal diseases, including peptic ulcer, chronic gastritis, functional dyspepsia, gastroesophageal reflux, Helicobacter pylori infection, etc., can all be accompanied by halitosis. If we find out the cause of bad breath, we can take effective treatment measures according to the cause.