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What can cause infertility in men?

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There are a wide number of reasons for male infertility. Some are caused by physical problems that prevent the sperm from being ejaculated normally in semen. Others affect the quality and production of the sperm itself.

SOURCES: 
American Society for Reproductive Medicine web site. 
American College of Obstetricians and Gynecologists web site. 
WebMD Fertility Center web site. Human Reproduction Update, July-August 2002. 
The Infertility Workup and Understanding Treatment Options, RESOLVE online. 
The Merck Manual, Seventeenth Edition, 2000. 
The Fertility Handbook: A Guide to Getting Pregnant, Addicus Books, 2002.

American Urological Association web site: "Male Infertility."

Reviewed by Jennifer Robinson on February 23, 2019

SOURCES: 
American Society for Reproductive Medicine web site. 
American College of Obstetricians and Gynecologists web site. 
WebMD Fertility Center web site. Human Reproduction Update, July-August 2002. 
The Infertility Workup and Understanding Treatment Options, RESOLVE online. 
The Merck Manual, Seventeenth Edition, 2000. 
The Fertility Handbook: A Guide to Getting Pregnant, Addicus Books, 2002.

American Urological Association web site: "Male Infertility."

Reviewed by Jennifer Robinson on February 23, 2019

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What are options for men who don't have sperm in their semen?

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