The cause of mouth ulcers is not “fire” as people think, medical research has shown that there are new findings on the cause of mouth ulcers, while the treatment of mouth ulcers can be considered in the form of dietary therapy. Let’s take a look at the following. What are the causes of mouth ulcers Cause 1: digestive system diseases and dysfunctions patients suffering from systemic diseases are prone to mouth ulcers, mainly by affecting the immune system and causing disease. Mouth ulcers are related to gastric ulcer, duodenal ulcer, ulcerative colitis, restrictive enteritis, hepatitis, etc. Studies have shown that 30-48% of patients with mouth ulcers have digestive disorders such as bloating, diarrhea or constipation. More than 9% of them have peptic ulcers. Cause 2: Endocrine changes Some female patients tend to occur during menstruation, which may be related to a decrease in the amount of estrogen in the body. Some women develop mouth ulcers around the time of their periods or menstruation, which are only temporarily relieved by medication and still appear as usual in the next month when they are menstruating, with unbearable pain and, at the same time, are often accompanied by annoying symptoms such as dry mouth, irritability, irritability and dry stools. Clinical studies have found that the appearance of mouth ulcers during menstruation is mainly due to the increase in the level of progesterone and the decrease in the level of estrogen (progesterone, etc.) in the body. Cause 3: Mental factors Some patients develop the disease under mental tension, mood swings, and poor sleep conditions, which may be related to plant nerve dysfunction. Cause 4: Genetic factors such as both parents suffer from recurrent mouth ulcers, about 80-90% of their children have the disease, if one of the two parents suffer from the disease, about 50-60% of their children have the disease. Cause 5: Other factors such as lack of trace elements zinc, iron, folic acid, vitamin B12, malnutrition, etc., can reduce immune function and increase the likelihood of recurrent mouth ulcers. Viruses may be the initiating factor of oral ulcers, but no relevant antibodies have been detected in the serum of patients, and no reports of viruses isolated from the lesioned tissue of oral ulcers have been seen. The role of bacteria on oral ulcers has been proposed for many years, and bacteria closely related to oral ulcers include Streptococcus haematobium and Helicobacter pylori. An imbalance in the production and clearance of superoxide radicals in the body, an imbalance in the ratio of thromboxane B2 and 6-ketoprostane and an overall decrease in the level of thromboxane can trigger oral ulcers. Microcirculatory disorders lead to slow blood flow, low blood flow and dilated capillary venous end, resulting in local ischemia and hypoxia, which cause mucosal membrane damage and ulcer formation. Zinc, iron and copper deficiencies in the serum are correlated with the occurrence of RAU. Smoking cessation has also been reported to induce mouth ulcers. Sodium 12-alkyl sulfate (SLS), a component of toothpaste, may irritate the mucosa and induce oral ulcers.