How are Testosteron and longevity related?

The relationship between testosterone and longevity is complex and not fully understood. Testosterone levels naturally decline with age, and low levels are associated with frailty, sarcopenia, and increased cardiovascular risk. Conversely, some observational studies suggest that very high testosterone levels – especially in men – may be linked to a higher risk of prostate cancer or cardiovascular events. The evidence is primarily human-observational, but not sufficient for causal conclusions. Randomized controlled trials on testosterone replacement therapy in older men show mixed results: improvements in bone density and muscle mass, but no consistent extension of lifespan. Long-term safety and efficacy data are lacking. The provided context does not contain direct information on testosterone and longevity; this answer is based on general medical knowledge. Caveat: Do not self-administer testosterone without medical supervision.