When is IgG Unverträglichkeit Senioren actually useful?

IgG food intolerance tests are widely marketed but lack robust scientific support for diagnosing food intolerances. IgG antibodies reflect immune exposure, not intolerance; they are a normal physiological response to food proteins. In seniors, age-related immune changes (immunosenescence) can alter IgG levels without indicating a true intolerance. Major allergy and immunology societies (e.g., DGAKI, EAACI) advise against using IgG tests for food intolerance diagnosis because they often lead to unnecessary dietary restrictions, which can cause malnutrition—a particular concern in older adults. The only potentially useful application might be in very specific clinical contexts, such as suspected IgG-mediated food allergy (rare) or research settings. For practical management, a detailed history, symptom diary, and supervised elimination-provocation testing are far more reliable. Evidence: mixed/unclear. Sources: none directly in provided context; based on general medical guidelines.