Myths vs facts: TSH and Langlebigkeit

The question of TSH and longevity is surrounded by myths. TSH (thyroid-stimulating hormone) is a marker of thyroid function. Some popular claims that a low TSH extends lifespan stem from animal studies or weak epidemiological observations. Current scientific consensus: TSH within the reference range (approx. 0.4–4.0 mU/L) is optimal for longevity. Both hyper- and hypothyroidism are associated with increased mortality. The idea that 'low-normal' TSH slows aging is not supported by robust human evidence. MyBody-X can measure TSH, but a single measurement is limited – values fluctuate diurnally and with illness. Interpretation should always be done by a physician. Evidence: unclear, as no specific studies are provided in the context. Sources: none.