Testosterone therapy, broadly referred to as Testosterone Replacement Therapy (TRT), increased approximately 27% from 2008 to 2022 with up to approximately 3% of all US adults having a prescription.

Testosterone is the quintessential male hormone (androgen), and it’s a busy one, helping to regulate intimate function, muscle mass, red blood cell count, mood, and more. But not all testosterone in ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Three forms of testosterone are found in serum: sex hormone-binding globulin (SHBG)-bound (60%-70% of total), albumin-bound (20%-30% of total), and free (1%-3% of total). SHBG-bound testosterone is ...

Low levels of total and bioavailable testosterone may be associated with an increased risk of dementia in elderly men, according to French investigators. From a cohort of 3,650 men aged 65 years and ...