Myth vs. fact: IgG food sensitivity tests are frequently marketed as tools to identify food intolerances or gut health issues. The scientific reality is that IgG antibodies to foods are a normal immune response indicating exposure, not intolerance or gut damage. Evidence (practice grade) is clear: IgG-based tests are not validated for diagnosing food intolerances and can lead to unnecessary, potentially harmful dietary restrictions. True allergies are diagnosed via IgE testing and controlled challenges. The MyBody-X gut microbiome test analyzes bacterial composition, not IgG. Consumers should recognize that IgG testing falls under marketing, not evidence-based medicine. Safety note: unnecessary elimination diets, especially in children, risk nutritional deficiencies. If you suspect a food intolerance, consult a physician or registered dietitian.
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