Hidden Gluten is trace amounts of gluten which may or may not exist in processed food or food eaten in restaurants or cafes.

People on gluten-free or gluten-free casein-free diets tend to regard all mysterious reactions to foods as being caused by trace amounts of gluten or casein.

One common example of this belief is the notion that all oats are contaminated with trace amounts of gluten, which is not true.

In reality individuals who have intolerances to gluten and casein react with a dose-related response and are rarely sensitive enough to react to trace amounts of gluten, but are reacting to other artificial additives or natural food chemicals.

The exception to this rule is when a genuine IgE allergy exists to gluten or casein, as allergic responses are not dose-related.