Infertile men three times more likely to develop testicular cancer

Over his lifetime, a man's risk of testicular cancer is 1 in 250 ( 0.4 percent). It is most common among males aged 15-35 years.


Micrograph of a seminoma. Image source: Nephron, Creative Commons Attribution ShareAlike 3.0, Wikipedia.

A few facts from a recent study reported by Reuters:

• Infertile men are nearly three times more likely to develop testicular cancer than those who are fertile.
  
  
• Certain forms of male infertility associated with faulty DNA repair which is also associated with development of tumors.
  
  
• During the last 30-50 years, there has been a continued increase in the incidence of testicular germ cell cancers.
  
  
• During the same period, there is evidence of a decline in semen quality and fertility in industrialized nations.

References:
Study finds infertility-testicular cancer link. Reuters.
Testicular cancer, from Wikipedia, the free encyclopedia.