Is TSH useful for gut health?

TSH (thyroid-stimulating hormone) is a standard marker for thyroid function, not directly for gut health. There is some evidence of a bidirectional relationship between the thyroid and gut microbiome (e.g., gut bacteria influence thyroid hormone metabolism), but the evidence is mostly mechanistic and from small studies. A single TSH measurement cannot diagnose gut issues or assess microbiome composition. MyBody-X offers hormone tests, but TSH is not explicitly mentioned as a gut health marker in the provided context. For a comprehensive gut health assessment, more specific parameters such as stool microbiome analysis, inflammatory markers (e.g., calprotectin), or zonulin are recommended. Conclusion: TSH is not a useful direct indicator for gut health; the evidence is weak and mechanistic. If a thyroid-gut axis disorder is suspected, a physician should be consulted.