Total testosterone measures the full amount of the hormone in your blood, while free testosterone represents the small, ...

What are normal testosterone levels by age? An older photographer mentors a younger one. Testosterone is an important hormone. It helps men develop during puberty, and as they age, it plays a critical ...

Testosterone is arguably one of the most essential hormones for supporting men’s health. It plays a role in supporting intimate, bone, muscle, and mental health. Testosterone levels that are higher or ...

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 ...

The guys in your local gym have been peddling it for years as essential for muscle growth. But in the past two decades, prescriptions for testosterone therapy (sometimes called TRT) have doubled. And ...

Please provide your email address to receive an email when new articles are posted on . Men who used dulaglutide, semaglutide or tirzepatide had a rise in free testosterone after starting treatment.

Genetics play a role in low testosterone for some men, but underlying causes vary widely. Many genes influence testosterone ...

We also know that within normal ranges, testosterone levels are not strongly predictive of aggression. In the amygdala, a ...