Infertility means that there is difficulty in conceiving a child. Problems can arise because of the man's reproductive system, the woman's, or a combination of both. Many infertile couples have primary infertility, which means they were never able to conceive. Some people however have secondary fertility, which means they are having trouble conceiving even though they already have children.
Causes of male infertility. Causes of male infertility may include: Abnormal sperm production or function due to various problems, such as undescended testicles, genetic defects, health problems including diabetes, prior infections such as mumps, trauma or prior surgeries on the testicles or inguinal region.