Testosterone levels in the middle range in older men is linked with living longer. Lower levels of the key male sex hormone is well known to indicate poor health but this study has found that high levels of testosterone also suggest bad health.
The research found that men with the lowest levels of testosterone had the highest cumulative mortality rate, followed by men with the highest levels. Males with levels in the middle range tended to live the longest.
The study suggests additional research should be undertaken to determine if health outcomes could be improved through treatments to alter hormone levels.Read more at The Endocrine Society's Journal of Clinical Endocrinology & Metabolism