Vitamin Deficiency & Stress
Mouth ulcers can also be caused by things that you are not consuming. If you lack Vitamin B12 or iron, you may be more likely to develop them. This is a common problem among vegetarians and vegans, as we get these nutrients from meat, fish, and dairy products. Try eating more eggs, grains, and iron-rich vegetables like beans and spinach.
Stress is another cause for canker sores. Surely you will realize that ulcers appear every time you feel like you want to explode. There could be a connection between the pace of life you lead and your oral health. There is no specific scientific reason why ulcers come out when you are stressed, but it is a common symptom. One theory is that when we sleep under stress, many people tend to grind their teeth, causing unnecessary friction and that could lead to ulcers. It is also very possible that the immune system’s ineffectiveness during stress contributes to the development of canker sores.