Infertility is the failure of a couple to become pregnant after 1 year of having regular, unprotected sexual intercourse. Problems in the male reproductive system can prevent a woman from getting pregnant.
Infertility is a problem for one of every six couples.
Many couples seek help from a specialist. Male infertility most commonly occurs because the man produces too few sperm or no sperm at all. Sometimes the sperm are abnormal. That is, they are malformed and cannot swim properly or they have a short lifespan. A normal sperm has a lifespan of about 4 days.