1 : a few normal sperm per milliliter of semen at least 20 million sperm. Less than normal, it will reduce the chance of pregnancy.

2, the activity was too weak sperm motility weak : they are unable to reach the fallopian tube through the cervix and egg meet.

3, abnormal sperm can not penetrate the egg shell : abnormal sperm fertilized reached purpose.

4, including : obstructive azoospermia and nonobstructive azoospermia azoospermia. Obstructive azoospermia from infection or congenital defect caused spermatic cord. Nonobstructive azoospermia from congenital chromosomal abnormalities, cryptorchidism, the boy suffered mumps caused.

5, sexual difficulties : Some men with premature ejaculation or erectile dysfunction, causing difficulties in sexual intercourse.

This article was posted on 2007-02-27