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  2. Semen quality - Wikipedia

    en.wikipedia.org/wiki/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. An amount of human semen of unknown quality. Cryptorchidism, hypospadias, testicular cancer and poor semen quality make up ...

  3. 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 in Western countries 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 ...

  4. Oligospermia - Wikipedia

    en.wikipedia.org/wiki/Oligospermia

    Urology. Terms oligospermia, oligozoospermia, and low sperm count refer to semen with a low concentration of sperm [1] and is a common finding in male infertility. Often semen with a decreased sperm concentration may also show significant abnormalities in sperm morphology and motility (technically oligoasthenoteratozoospermia).

  5. Male infertility - Wikipedia

    en.wikipedia.org/wiki/Male_infertility

    Male infertility refers to a sexually mature male's inability to impregnate a fertile female. [1] In humans, it accounts for 40–50% of infertility. [2][3][4][5] It affects approximately 7% of all men. [6] Male infertility is commonly due to deficiencies in the semen, and semen quality is used as a surrogate measure of male fecundity. [7]

  6. Hypospermia - Wikipedia

    en.wikipedia.org/wiki/Hypospermia

    Hypospermia is a condition in which a man has an unusually low ejaculate (or semen) volume, less than 1.5 mL. It is the opposite of hyperspermia, which is a semen volume of more than 5.5 mL. [1] It should not be confused with oligospermia, which means low sperm count. Normal ejaculate when a man is not drained from prior sex and is suitably ...

  7. Sperm motility - Wikipedia

    en.wikipedia.org/wiki/Sperm_motility

    Sperm motility. Sperm motility describes the ability of sperm to move properly through the female reproductive tract (internal fertilization) or through water (external fertilization) to reach the egg. Sperm motility can also be thought of as the quality, which is a factor in successful conception; sperm that do not "swim" properly will not ...

  8. Sperm - Wikipedia

    en.wikipedia.org/wiki/Sperm

    Human sperm stained for semen quality testing. Sperm quantity and quality are the main parameters in semen quality, which is a measure of the ability of semen to accomplish fertilization. Thus, in humans, it is a measure of fertility in a man. The genetic quality of sperm, as well as its volume and motility, all typically decrease with age. [17]

  9. Testicular atrophy - Wikipedia

    en.wikipedia.org/wiki/Testicular_atrophy

    Poor diet can otherwise lead to oxidative stress, which causes sperm damage, leading to lower testicular volume and lower sperm quality. Ensuring enough vitamin and mineral intake might also be recommended, since omega-3 fatty acids, antioxidant vitamins, zinc, and selenium might help reduce the damage by oxidative stress and reduce inflammation.

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