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Low Sperm Count... one major cause! |
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anybody know the normal range of sperm count? |
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The normal range of sperm count is between 35 and 200 million sperm per milliliter of semen. An infertile man may have none to lower than the average number. There are no visible symptoms for this problem and most affected men will not know about it until tests have been carried out. |
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Abnormal Sperm! |
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Some men are infertile because of failure to ejaculate. During intercourse, these men suffer from retrograde ejaculation, where the semen is ejaculated backwards into the bladder instead of the vagina. Without sperm, egg fertilization and implantation cannot take place. |
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Exposing the testes to high temperatures can affect the ability of the sperm to move and fertilize an egg. For instance, men with cryptorchism have testicles that do not descent into the scrotum. That means the testes are still inside the body cavity, which has a higher temperature than the external scrotum. |
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Men who wear tight underwear and pants also expose their testes to high temperatures. Another condition that raises the temperature in the testes is varicocele, or enlarged veins, in the scrotum. |
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Blocked sperm ducts are also to blame for male infertility. A small number of men have vas deferens or sperm ducts that are blocked or damaged. This prevents the sperm from reaching the partner’s egg. Blocked sperm ducts can be a result of an infection such as mumps, injury to the testicles, congenital defects or a vasectomy. |
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Some men become infertile for a number of reasons. Low sperm count, abnormal sperm, failure to ejaculate, exposing the testes to high temperatures and blocked sperm ducts have been identified as the common causes of male infertility. |