IgE (immunoglobulin E) is primarily involved in allergic responses and defense against parasites. In the context of gut health, elevated IgE can indicate food allergies or eosinophilic esophagitis—conditions that may impair digestive function. However, IgE is not a general marker for gut health. A healthy gut is better assessed through microbiome composition, inflammatory markers (e.g., calprotectin), or barrier integrity (zonulin). Measuring IgE alone does not provide a comprehensive picture of gut health. Evidence: human-moderate for food allergy links, but unclear for general gut health assessment. Caveat: Normal IgE does not rule out gut issues; targeted diagnostics by a specialist are needed.
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