The inability of a couple to get pregnant after a minimum period of one year of unprotected(without using any form of contraception) regular sexual intercourse,(minimum ¾ times per week) with due attention to the fertile period.
Causes of subfertility?
Male factors 40% and rising
Female factors 30%
No cause in either male or female 30-40%
Both male and female factors 40-60%
Conditions of male genital tract
Varicocele,undescended testes,vasectomy,reduced sperm quality and quantity(caused by smoking,alcohol,drugs),ejaculatory dysfunction.