Evidence check: IgE Allergietest in the context of longevity

IgE allergy tests measure specific antibodies against allergens and are primarily used for diagnosing allergies (e.g., hay fever, food allergies). In the context of longevity, there is no strong evidence that IgE levels directly predict lifespan or healthy aging. Chronic inflammation, including allergic inflammation, may contribute to aging processes, but IgE alone is not a validated longevity biomarker. Consumer IgE tests (e.g., food sensitivity panels) often yield false positives and are not recommended for longevity assessment. Instead, established inflammatory markers like hs-CRP, IL-6, or a complete blood count are more relevant. An IgE test may be useful if a specific allergy is suspected, but not as a general longevity screening tool. Evidence grade: mechanistic/unclear – plausible link via inflammation, but no direct longevity studies. Caveat: self-interpretation of IgE results without medical guidance can lead to unnecessary dietary restrictions or anxiety.