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2. Male infertility - Wikipedia

   en.wikipedia.org/wiki/Male_infertility

   Male infertility refers to a sexually mature male's inability to impregnate a fertile female. In humans, it accounts for 40–50% of infertility. It affects approximately 7% of all men. Male infertility is commonly due to deficiencies in the semen, and semen quality is used as a surrogate measure of male fecundity.

3. Semen analysis - Wikipedia

   en.wikipedia.org/wiki/Semen_analysis

   G0027. A semen analysis (plural: semen analyses), also called seminogram or spermiogram, evaluates certain characteristics of a male's semen and the sperm contained therein. [1] [2] [3] It is done to help evaluate male fertility, whether for those seeking pregnancy or verifying the success of vasectomy. Depending on the measurement method, just ...

4. What a urologist wants you to know about male infertility

   www.aol.com/male-infertility-contributes-40...

   Men’s fertility naturally declines with age, affecting sperm quality and genetic integrity. This process is influenced by lifestyle choices such as smoking cigarettes or vaping, excessive ...

5. Hamster zona-free ovum test - Wikipedia

   en.wikipedia.org/wiki/Hamster_zona-free_ovum_test

   The hamster zona-free ovum test ( HZFO test ), or hamster egg-penetration test, or sometimes just hamster test, is an in-vitro test used to study physiological profile of spermatozoa. [1] The primary application of the test is to diagnose male infertility caused by sperm unable to penetrate the ova. The test has limited value, due to expense ...

6. Semen quality - Wikipedia

   en.wikipedia.org/wiki/Semen_quality

   Semen quality. Semen quality is a measure of male fertility, a measure of the ability of sperm in semen to accomplish fertilization. Semen quality involves both sperm quantity and quality. Semen quality is a major factor for fertility. Cryptorchidism, hypospadias, testicular cancer and poor semen quality make up the syndrome known as testicular ...

7. Male infertility crisis - Wikipedia

   en.wikipedia.org/wiki/Male_infertility_crisis

   The male infertility crisis is an increase in male infertility since the mid-1970s. [1] The issue attracted media attention after a 2017 meta-analysis found that sperm counts had declined by 52.4 percent between 1973 and 2011. [2] [3] The decline is particularly prevalent in Western countries such as New Zealand, Australia, Europe, and North ...