Infertility is not totally problem of women; men’s sperm might one of the problem causes infertility. If the fertile is successful, the man must be able to deliver an adequate quantity of normal sperm into woman’s vagina, and the sperm can fertilize the egg successfully.
Temperature of the Sperm --- High temperature of testes can reduce the amount of sperm and the vigor of sperm movement. High temperature of testes can also increase the amount of abnormal sperm. Temperature might be increased by heat, disorder, fever and so on.
Hormonal / Genetic Disorder --- Hormonal disorder is caused by the body cannot produce sufficient sexual hormone to stimulate the production of sperm. Genetic disorder is caused by abnormality of the sex chromosoms, such as Klinefelter syndrome (XXY chromosome).
External Factors --- Injury of testes, explore to industrial, toxin or drugs also might affect the production of sperm. Excessive alcohol intake also may reduce production of sperm.
Disorder either part of the sexual organ --- Azoospermia is caused by the absence of sperm in semen. It might because of serious disorder of testes, blockage of vasa defenretia, missing of sminal vesical, or bloackage of ejaculatory duct.
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