What should I know about test unvertraglichkeit lebensmittel?

Food intolerance tests marketed directly to consumers (e.g., IgG blood tests, genetic panels) often lack robust scientific evidence. Many such tests measure IgG antibodies, which typically reflect normal immune exposure to foods rather than true intolerance. Genetic tests for variants like TAS2R38 (bitter taste perception) or CAT (antioxidant enzyme) have no validated role in diagnosing food intolerances. The evidence base is weak, effect sizes are small, and clinical translation is absent. Reliable diagnosis of food intolerance requires medically supervised elimination diets, breath tests (for lactose, fructose), or controlled challenges. Consumers should be aware that many of these tests are unnecessary and may lead to unnecessary dietary restrictions or nutritional imbalances. The provided context, including a critical analysis of wellness labs, confirms that marketing claims often far exceed scientific support. Professional medical or nutritional guidance is strongly recommended before acting on any test results.