Myths vs facts: TSH Schilddrüse and Müdigkeit

The question about myths vs facts regarding TSH and fatigue is not addressed in the provided context. From general medical knowledge: Elevated TSH can indicate hypothyroidism, which commonly causes fatigue, lethargy, and weight gain. However, fatigue is a highly nonspecific symptom – many other causes like sleep deprivation, stress, iron deficiency, or depression are possible. A normal TSH does not completely rule out thyroid disease (e.g., subclinical forms), and a mildly elevated TSH does not automatically require treatment. The evidence for the link between hypothyroidism and fatigue is strong (numerous clinical studies), but interpretation requires medical evaluation including fT3/fT4 and antibodies. Genetic tests like those from MyBody-X cannot diagnose thyroid conditions; they may analyze single genes (e.g., DIO2) but their effect on thyroid function is small and not suitable for clinical decisions. Bottom line: TSH is a useful marker, but fatigue has many causes – a genetic test is no substitute for medical diagnostics.