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The most common cause of male infertility is low sperm count. Absence
of sperm in the semen is less common, affecting 1 out of 100 men and affecting 10 to
15 out of 100 infertile men.1
Causes of sperm count problems include:
See a picture of the
male reproductive system.
American Society for Reproductive Medicine and Society for Male Reproduction and Urology (2008). Evaluation of the azoospermic
male. Fertility and Sterility, 90(Suppl 3):
Fritz MA, Speroff L (2011). Male infertility. In
Clinical Gynecologic Endocrinology and Infertility, 8th
ed., pp. 1249–1292. Philadelphia: Lippincott Williams and Wilkins.
December 7, 2011
Sarah Marshall, MD - Family Medicine & Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology
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