Is IgE Allergietest useful for Langlebigkeit?

The IgE allergy test (e.g., MyBody-X AllergieCheck) measures specific IgE antibodies to allergens, indicating sensitization, not clinical allergy. For longevity purposes, this test is not useful. While allergies can affect quality of life and, in rare cases (e.g., anaphylaxis), be life-threatening, an IgE test provides no direct information about aging processes, biological age, inflammatory markers, or genetic longevity factors. The evidence for using IgE tests in the context of longevity is weak and largely based on marketing claims. False positives are common and may lead to unnecessary dietary restrictions or anxiety. Those interested in longevity should focus on validated biomarkers (HbA1c, CRP, vitamin D, lipid profile) and evidence-based lifestyle factors (diet, exercise, sleep). An allergy test alone has no proven benefit for extending lifespan.