Is IgG Unverträglichkeitstest useful for Stress?

The question of whether an IgG food intolerance test is useful for stress is not addressed in the provided context. In general, IgG tests are not recommended by medical guidelines for diagnosing food intolerances, as they often yield false positives and lack clinical relevance for stress-related symptoms. While stress can affect the gut-brain axis and exacerbate digestive issues, IgG testing is not validated for this purpose. The evidence is weak and largely based on mechanistic reasoning or marketing. More reliable approaches include symptom diaries and medically supervised elimination diets. The context does not support the use of IgG tests for stress.