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GlossaryAzoospermia

complete absence of sperm in male ejaculate

Azoospermia is a medical condition characterized by the complete absence of sperm in a man's ejaculate. This can result from either a blockage that prevents sperm from being released or a problem with sperm production in the testes. It is a significant cause of male infertility and requires thorough evaluation to determine the underlying cause and appropriate treatment options.

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research Finasteride Use in the Male Infertility Population: Effects on Semen and Hormone Parameters

54 citations , September 2013 in “Fertility and Sterility”

Finasteride can reduce fertility in some men, but stopping it increases sperm count.

research Propecia-Induced Spermatogenic Failure: A Report of Two Cases

49 citations , December 2007 in “Fertility and Sterility”

Stopping finasteride improved sperm counts in two men, reducing the need for fertility treatments.

research A Combined Regimen of Cyproterone Acetate and Testosterone Enanthate as a Potentially Highly Effective Male Contraceptive

49 citations , August 1996 in “The Journal of Clinical Endocrinology and Metabolism”

The combination of cyproterone acetate and testosterone enanthate is highly effective in preventing sperm production and could be a good reversible male contraceptive.

research A Review of Androgen-Progestin Regimens for Male Contraception

43 citations , July 2003 in “Andrology”

Hormonal male contraception is effective and could be market-ready, but more research is needed to ensure safety for all ethnic groups.

research Testosterone Is a Contraceptive and Should Not Be Used in Men Who Desire Fertility

39 citations , January 2019 in “The World Journal of Men's Health”

Testosterone replacement therapy can prevent men from fathering children and should not be used by those wanting to stay fertile.

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