When a man is diagnosed with testicular failure, a number of specific causes for male infertility can be indicated. Testicular failure is an umbrella term used to refer to the testis inability to properly produce sperm or hormones.

Causes of Testicular Failure
There are a number of reasons why a man's testicles may fail to work. This includes chromosomal abnormalities that have been present since birth; testicular trauma; testicular torsion; and diseases or infections that affect the testicles (i.e. mumps and testicular cancer). Additionally, regular use of certain drugs as well as medications can have a direct impact on testicular function.

Certain lifestyle factors can also make an impact on your testicle's ability to work properly. Some activities, like riding a motorcycle, can lead to constant, low-level injury of the scrotum thereby causing testicular problems.

Regular use of recreational drugs and steroids have also been linked with testicular damage and impairing the production of sperm. Men who had an undescended testicle at birth are also at an increased risk of experiencing testicular failure later in life.

Is it Only My Fertility that is Affected?
Depending on the type of testicular failure you are experiencing, you may experience more than just infertility. When testicular failure results in the male body's incapability to produce the proper amount of male hormones, a man will likely be diagnosed with hypogonadism. This condition causes the testicles to not produce enough testosterone, the male sex hormone, while producing too much FSH and LH. As a result, a man may notice a loss of libido, enlarged male breasts, and a decrease in muscle mass. When this condition is present from birth, it can also lead to the failure to start puberty.