Myths vs facts: TSH Schilddrüse and longevity

The question of myths vs facts regarding TSH (thyroid-stimulating hormone) and longevity is nuanced. A common myth is that a low-normal TSH is automatically linked to longer life. Observational studies show that both hyperthyroidism (low TSH) and hypothyroidism (high TSH) are associated with increased mortality. The optimal TSH range for longevity is not clearly defined and varies by individual. Fact: TSH is a marker of thyroid function, not a direct longevity predictor. Reference ranges are population-based and not validated for lifespan optimization. Factors like age, sex, iodine status, and genetics influence TSH. Another myth: supplements can specifically lower or raise TSH to extend lifespan—evidence is lacking. Thyroid diagnostics should be done by a physician, especially if symptoms are present. In summary, TSH is a useful clinical marker, but its role in longevity is weakly supported. Individual variability and the multifactorial nature of aging make simple TSH targets obsolete.