What to watch with TSH Schilddrüse and Darmgesundheit?

TSH (thyroid-stimulating hormone) is a key marker of thyroid function. Gut health can influence TSH through several pathways: inadequate iodine absorption (e.g., in malabsorption or gut disorders) impairs thyroid hormone synthesis; selenium deficiency reduces conversion of T4 to active T3; the gut microbiome affects enterohepatic recycling of thyroid hormones and, via intestinal permeability, may trigger or worsen autoimmune thyroiditis (Hashimoto). However, these effects are complex and not reliably assessed by direct-to-consumer tests. An isolated abnormal TSH requires a full thyroid panel (fT3, fT4, antibodies) and clinical evaluation. Caution: supplementing iodine or selenium without confirmed deficiency can aggravate underlying thyroiditis. Evidence is based on observational and mechanistic studies – no robust RCTs prove a direct causal link between gut health and TSH in healthy individuals. MyBody-X tests offer insights, not diagnoses.