Hypogonadism may be caused by a testicular disorder, such as the testicles not responding to signals from the brain to make enough testosterone and sperm.
What treatments are available for small testicles? There are, however, some conditions that cause testicles to be small. Gonadotropins are hormones that stimulate activity in the testicles. Clomiphene (Clomid) is an oral medication that boosts hormones necessary for fertility.
Doctors suspect this is due to changes in hormones as men age. Secondary hypogonadism isn’t due to a problem that starts in the testicles. Male gorillas, on the other hand, tend to have smaller testicles and are quite protective of their offspring. One in particular is called male hypogonadism.
Hypogonadism is a condition in which the body doesn’t produce enough testosterone to help ensure proper development of male characteristics, such as the penis, testicles, and muscle mass. More evidence is needed to better understand the connection between testicles, sperm quality, and sleep.

A group of Danish researchers looked at the connection between sperm quality, semen count, and testicle size.