Main causes of canker sores
Nutritional deficiency: Deficiency of vitamin B12, folic acid, iron, and zinc in the body is the main cause of canker sores.
Digestive problems: Canker sores occur frequently in people with digestive problems such as constipation, gastritis, and acidity.
Trauma: Accidentally biting the cheek, brushing the teeth, using a rough toothbrush, or wearing braces can cause cuts.
Stress: Excessive stress can reduce the body’s immunity and cause canker sores.
Hormonal changes: Canker sores are common in women during menstruation or when there are hormonal changes.
Infections: Some types of viral infections can cause canker sores.
Medications: The use of certain medications can cause cuts inside the mouth.
Food allergy: An allergic reaction to certain foods (such as chocolate, coffee, spicy foods).
