Can IgE help with Müdigkeit?

IgE (Immunoglobulin E) is primarily involved in allergic responses. There is no direct scientific evidence that IgE itself helps with fatigue. However, undiagnosed allergies or chronic immune activation (e.g., in allergic asthma or seasonal allergies) can contribute to feelings of tiredness. In such cases, measuring IgE might help identify triggers, and managing allergies could alleviate fatigue. The evidence is indirect and not sufficient for a general recommendation. Elevated IgE without allergy symptoms is not a specific marker for fatigue. More common causes include sleep deprivation, iron deficiency, thyroid dysfunction, or psychological factors. Therefore, IgE may be useful in selected cases of allergy-related fatigue, but it is not a general remedy. Caution is advised against overinterpreting direct-to-consumer test results.