What should I know about nahrungsmittelunvertraglichkeit wie testen?

Food intolerance is not a classic allergy; it often involves enzyme deficiencies (e.g., lactose), irritable bowel syndrome, or histamine issues. Many commercial tests (IgG blood tests, hair analysis) lack scientific validation – the German Society for Allergology and Clinical Immunology advises against them. A reliable approach includes a symptom diary, an elimination diet under medical supervision, and then targeted provocation. DNA tests like MyBody-X can only reveal genetic predispositions (e.g., lactase persistence) but cannot diagnose an active intolerance. Evidence for direct-to-consumer intolerance tests is weak. For actual symptoms, consult a doctor; validated methods include breath tests (lactose, fructose) or biopsy (celiac disease). The provided context lacks specific studies on food intolerance testing – therefore the evidence level is unclear. Beware of marketing claims: a genetic test alone does not replace medical evaluation.