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Showing posts with the label How common is male infertility.

How common is male infertility, and what are its causes?

CAUSES OF INERTILITY IN MALES    - Sperm abnormalities: ⁃ Due to low sperm counts, poor sperm quality or both and avcount for more than 90% of male infertility case. Its cause is unknon in30-40% of cases. ⁃ Low sperm  count ( oligospermia:If the woman is fertile and young , a sperm count as 10 million /ml can bring acount conception over time at the rate of about 30% . ⁃ poor sperm motility (Asthenospermia) : Slow or zig-zig movement of sperm may have difficulty invading the cervical mucosao or penetrating the zona pellucida of the egg. ⁃ Abnormal sperm morphology ( teratospermia):Morphologically abnormal sperm cannot fertilize an egg. ⁃ extremely small ( pinpoint) head. ⁃ tapered head ⁃ crooked head ⁃ two heads ⁃ tail with kinks and curls ⁃ Low semen levels: below 2.5-5ml in one ejaculation.