What to watch with Leaky Gut Test and Müdigkeit?

The leaky gut test (zonulin, α1-antitrypsin) lacks standardized evidence and validated reference ranges. Fatigue (Müdigkeit) is multifactorial – sleep, stress, iron deficiency, thyroid function, vitamin D, and diet are more established contributors. A positive leaky gut result alone does not explain fatigue. Genetic markers like rs1815739 (ACTN3) relate to muscle performance, not general tiredness. Be cautious of expensive supplements marketed based on such tests. Practical steps: get a full blood panel (CBC, ferritin, TSH, B12, vitamin D) and keep a symptom diary. The evidence for leaky gut tests is marketing-driven, not clinically robust. Consult a doctor before drawing conclusions.