Infertility generally refers to the inability to get pregnant after a year of unprotected intercourse. According to the World Health Organization (WHO), more than 186 million women or 1 in every 4 couples in developing countries such as Nigeria are infertile. A couple is said to be childless when they are unable to reproduce their kind. Simply put, infertility leads to childlessness. It is believed that about 20% of cases of infertility are due to a problem in the man, about 40% to 50% of cases of infertility are due to a problem in the woman and about 30% to 40% of cases of infertility are due to problems in both the man and the woman. Visit www.healthadviceng.com to read more.