Are Canker Sores Caused By Bad Nutrition?  What Dietary Measures Can Help

Damage to the delicate mouth tissues with certain foods, and toxins like alcohol can increase risk.  Mechanical damage from rough foods, braces, or biting one’s cheek can also be the first step in the development of canker sores.  With this in mind, certain dietary changes may help reduce the occurrence of Canker Sores.  

Most of the items on the following list have the potential to damage the delicate mucosal lining of the mouth.  Even sodium lauryl sulphate, the foaming agent in toothpaste, may damage mucosa by stripping a protective layer from the tissues of the mouth.  One should consider limiting the following foods:

Hard or Rough Foods - nuts, hard bread, chips, hard candy
Acidic Foods or Drinks - citrus fruit, tomatoes, lemonade
Alcohol - especially hard liquor
Refined Carbohydrates or Sweets - may raise bacterial loads in the mouth
Salty Foods - can irritate lining
Sodium Lauryl Sulfate - a common foaming agent in toothpaste may strip protective lining