Is male factor infertility more common than female infertility?
In about one third of cases, male factor infertility is the sole source of reproductive problems. In roughly another third, the problem is a result of female infertility. The rest of the time, both the male and female contribute to infertility. So, male and female factors are more or less equal in their frequency. Male factor infertility, however, is easier to identify and to treat, in most cases. For this reason, semen analysis is often the first testing procedure to be performed when a couple begins fertility assessment.
