Is Leaky Gut Test useful for blood sugar?

The usefulness of a Leaky Gut test for blood sugar is scientifically unclear. The concept of increased intestinal permeability (leaky gut) is linked to inflammation and potentially insulin resistance, but direct evidence that a leaky gut test meaningfully guides blood sugar management is weak. Most commercial tests measure markers like zonulin, but their reliability and clinical validity are debated. No major medical guidelines recommend routine leaky gut testing for glycemic control. Established blood sugar markers (fasting glucose, HbA1c, OGTT) remain the standard. While some individuals with digestive issues may benefit from a gut health assessment, the test alone does not provide actionable insights for blood sugar. Evidence: marketing/unclear. Caveat: Do not base dietary changes solely on such tests without professional guidance.