Evidence check: Leaky Gut Test in the context of Haut

The query asks about a 'Leaky Gut Test' in the context of skin issues. The provided context does not directly address such a test. MyBody-X offers DNA tests for collagen and skin, but no specific leaky gut test is mentioned. Leaky gut (increased intestinal permeability) is mechanistically linked to inflammation and skin conditions like acne or psoriasis via cytokines such as IL-1B. However, evidence for consumer leaky gut tests is weak: no standardized, clinically validated test exists. Most commercial tests rely on surrogate markers (zonulin, LPS) or microbiome analysis with unclear clinical utility. Evidence level: marketing/unclear. Caveat: do not use such tests for medical decisions without consulting a physician.