Causes
The exact cause of many aphthous ulcers is unknown but citrus fruits (e.g. oranges and strawberries), lack of sleep[4], illness, physical trauma, hormonal changes, menstruation, sudden weight loss, food allergies, immune system reactions[5] and deficiencies in vitamin B12, iron, and folic acid[6] may contribute to their development. Nicorandil and certain types of chemotherapy are also linked to aphthous ulcers.[7]
Trauma to the mouth is the most common trigger.[8][9] Physical trauma, such as that caused by toothbrush abrasions, laceration with sharp or abrasive foods (such as toast) or objects, accidental biting (particularly common with sharp canine teeth), after losing teeth, or dental braces can cause aphthous ulcers by breaking the mucous membrane. Other factors, such as chemical irritants or thermal injury, may also lead to the development of ulcers. Using a toothpaste without SLS may reduce the frequency of aphthous ulcers[10][11][12] but some studies have found no connection between SLS in toothpaste and aphthous ulcers.[13] Celiac disease has been suggested as a cause of aphthous ulcers; small studies of patients with Celiac disease did not demonstrate a conclusive link between the disease and aphthous ulcers[14][15] but some patients benefited from eliminating gluten from their diet.[14]
The exact cause of many aphthous ulcers is unknown but citrus fruits (e.g. oranges and strawberries), lack of sleep[4], illness, physical trauma, hormonal changes, menstruation, sudden weight loss, food allergies, immune system reactions[5] and deficiencies in vitamin B12, iron, and folic acid[6] may contribute to their development. Nicorandil and certain types of chemotherapy are also linked to aphthous ulcers.[7]
Trauma to the mouth is the most common trigger.[8][9] Physical trauma, such as that caused by toothbrush abrasions, laceration with sharp or abrasive foods (such as toast) or objects, accidental biting (particularly common with sharp canine teeth), after losing teeth, or dental braces can cause aphthous ulcers by breaking the mucous membrane. Other factors, such as chemical irritants or thermal injury, may also lead to the development of ulcers. Using a toothpaste without SLS may reduce the frequency of aphthous ulcers[10][11][12] but some studies have found no connection between SLS in toothpaste and aphthous ulcers.[13] Celiac disease has been suggested as a cause of aphthous ulcers; small studies of patients with Celiac disease did not demonstrate a conclusive link between the disease and aphthous ulcers[14][15] but some patients benefited from eliminating gluten from their diet.[14]
Ah. That's why. If my mum sees this, she's gonna kill me, via excessive supplements.
CANKER SORE SUCKS
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