Myths vs facts: Testosteron Test and Langlebigkeit

Testosterone tests are often marketed as a key to longevity, but the reality is more nuanced. Fact: Low testosterone has been associated with increased all-cause mortality in some observational studies, but causality remains unproven. Myth: A single test result can predict your lifespan. In reality, testosterone fluctuates diurnally and is affected by stress, sleep, and diet. Moreover, at-home tests (saliva, fingerprick) often measure free or total testosterone with limited accuracy. For a meaningful assessment, multiple morning blood draws, SHBG, LH, and clinical symptoms are required. Longevity is multifactorial – genetics, lifestyle, inflammation, and more. A testosterone test alone does not provide a longevity profile. Beware of providers that recommend supplements without medical supervision. Evidence: moderate for association with mortality, weak for preventive benefit.