Also called testes, these are the two oval-shaped organs that hang from the base of a man’s torso. They’re a little smaller than a golf ball. They rest in a sac of skin known as the scrotum ...

Wearing boxers to the gym You might be risking a hernia Learn why proper testicle support during workouts is essential for ...

Human biology is not black and white. Although newborns are typically categorized as male or female at birth based on visible ...

The testis, or testicle, is one of typically two oval-shaped endocrine glands that form part of the male reproductive system. The testes are the male homologues to the female ovaries, and their ...

Two hormones are critical in normal sex differentiation. The testes of normal 46,XY males secrete both Müllerian Inhibiting Substance (also known as MIS or antimüllerian hormone) and ...

A comparative study of more than 100 primate species finds that males tend to have either large testes or flashy ornaments, but not both—suggesting an evolutionary trade-off between the two. The ...

Leydig cell tumours (LCT) are rare sex-cord gonadal tumours that account for less than 5% of testicular neoplasms. They are ...

Cancer can occur in many areas of the body, including the sexual organs. Men have two testicles, sometimes called testes. They are one of many glands in the body. Their job is to make male ...