Why insurance requires an 8 a.m. testosterone test and what causes hand numbness and locking fingers.

Injectable testosterone esters and transdermal testosterone gels have generally been assumed to be equally safe and effective forms of testosterone-replacement therapy for male hypogonadism. Now, ...

Testosterone substitution in male hypogonadism is a recognized tool to treat symptomatic patients. Various forms of this treatment exist including a long-acting intramuscular form using testosterone ...

Matt Kaeberlein, a longevity researcher, started TRT in his 50s. He said stigma and lack of information can make the process confusing.