Are mouth ulcers caused by a deficiency in vitamin B2?

The occurrence of oral ulcers is associated with a deficiency in vitamin B2, but it is not the sole cause. Vitamin B2, also known as riboflavin, is one of the essential water-soluble vitamins required by the human body and is crucial for maintaining the health of oral mucosa. When intake of vitamin B2 is insufficient, the oral mucosa may become damaged, thereby increasing the risk of oral ulcers. However, the development of oral ulcers is the result of multiple contributing factors. In addition to vitamin B2 deficiency, other factors such as genetic predisposition, decreased immunity, mental stress, and traumatic factors may also be involved. For example, approximately 40% of patients with oral ulcers have a family history, indicating the role of genetic factors. Moreover, high levels of mental stress and poor sleep quality can also lead to a decline in immune function, thus triggering oral ulcers. For individuals with vitamin B2 deficiency, moderate supplementation with vitamin B2 tablets or increased consumption of foods rich in vitamin B2, such as animal liver, eggs, and milk, may be beneficial. If concerns persist, please consult a relevant physician.