To mark Testicular Cancer Awareness Month this April, the Testicular Cancer Society has partnered with FP7McCann to launch ‘I ...

Medically reviewed by Geetika Gupta, MDMedically reviewed by Geetika Gupta, MD The testes, or testicles, are two egg-shaped sex organs that play an important role in the male reproductive system.

People with male reproductive anatomy usually have two testicles (testes), commonly called balls. The function of testicles is to produce sperm and testosterone, which is a male sex hormone.