Are canker sores a sign of dehydration?


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Dehydration The exact cause of most canker sores is unknown. Stress or tissue injury is thought to be the cause of simple canker sores.Some cases of complex canker sores are caused by an impaired immune system; nutritional problems, such as vitamin B-12, zinc, folic acid, or iron deficiency; and gastrointestinal tract disease, such as Celiac disease and Crohn's disease.

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