Evidence check: TSH Schilddrüse in the context of Sport

TSH (thyroid-stimulating hormone) is a key regulator of thyroid function and is often measured in sports contexts to assess metabolic and energy status. Acute exercise can transiently suppress TSH levels, while chronic overtraining may be linked to subclinical hypothyroidism – but the evidence is moderate, mostly from observational studies. An isolated abnormal TSH does not confirm thyroid disease; in athletes, factors like training load, caloric restriction, and stress can alter values. MyBody-X tests can measure TSH but do not provide a clinical diagnosis. Interpretation should include fT3, fT4, and clinical symptoms. If values are abnormal or performance declines, medical evaluation is recommended. Evidence: human-moderate – no large RCTs directly link TSH to athletic performance. Caveat: high individual variability; reference ranges are not athlete-specific.