Can FT4 help with Langlebigkeit?

FT4 (free thyroxine) is a thyroid hormone measured in the Hormon VitalCheck. Normal thyroid function is essential for metabolism and overall health, which can indirectly influence longevity. However, there is no strong evidence that optimizing FT4 alone extends lifespan. Thyroid hormones should only be used when medically indicated and under medical supervision, as both hyper- and hypothyroidism can have adverse health effects. The evidence is based on observational studies, not randomized controlled trials for longevity. Thus, the significance is limited.