8. MSG and Gluten
Gluten and MSG have been linked to anxiety in sensitive people. MSG is a gluten derivative. Gluten is found naturally in wheat products (see white flour). MSG is a flavor enhancer and is found in processed foods, Asian food, and frozen meals. Soy sauce often contains both gluten and MSG.
Researchers have found that people with untreatable anxiety respond very well to a gluten-free diet, suggesting that there is a direct correlation between the two.