Approximately 15% of couples do not achieve pregnancy within one year of unprotected sexual intercourse. Male infertility factor is identified in about 50% of these cases and is solely responsible in 20% of couples. Male infertility has been attributed to a variety of causes including lifestyle factors, gonadotoxin exposure, hormonal dysfunction, chromosomal disorders, varicoceles, testicular failure, ejaculatory disorders, and obstruction.
For a successful pregnancy to occur, every step of the complex human reproductive process — from the release of a mature egg from the ovary to the fertilization of the egg to the implantation of the fertilized egg and growth of embryo in the uterus — has to take place right.