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Male Factor Infertility
Male infertility can be suspected when a man is unable to cause pregnancy after one year of unprotected intercourse with a female partner who is ovulating and has open fallopian tubes.
Some known causes of male infertility include:
Studies indicate that approximately 40% of infertility is related to male factor problems. Male factor is the sole cause of infertility in approximately 20%-25% of infertile couples and it contributes to diminished fertility in another 20% of couples.