Men with undescended testicles which were corrected after the age of 11—13, or which have never been corrected, may be at greater risk.
Men with fertility problems have an increased risk of testicular cancer.
Having a brother and/or father who has had testicular cancer increases your risk. Research continues to investigate which genes are responsible.
Men who are taller than average have an increased risk of testicular cancer.
A small number of men who have previously been treated for cancer in one testicle may go on to develop cancer in the other.