STIs such as Mycoplasma, Ureaplasma, Trichomonas, Chlamydia and Gonorrhea are a leading cause of male infertility, often have no symptoms, and can be prevented by always using condoms.
The ability to have babies. Fertility depends on various factors, for example the patency of the Fallopian tubes, ovulation, the anatomy of the internal genital organs.
The difficulty or inability to have babies. Infertility includes primary infertility (when there have been no pregnancies achieved despite 12 months of seeking to conceive) and secondary infertility (when there have been no pregnancies achieved despi...