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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.
Phthalates, a ubiquitous pollutant, may cause decreased sperm production when having been exposed to it during prenatal development. [8] [11] Other potential xenoestrogens that have been associated with decreased sperm quality in some studies are bisphenol A, nonylphenol and octylphenol. [8]
There are various combinations of these as well, e.g. Teratoasthenozoospermia, which is reduced sperm morphology and motility. Low sperm counts are often associated with decreased sperm motility and increased abnormal morphology, thus the terms "oligoasthenoteratozoospermia" or "oligospermia" can be used as a catch-all.
A sperm bank takes a number of steps to ensure the health and quality of the sperm which it supplies and it will inform customers of the checks which it undertakes, providing relevant information about individual donors. A sperm bank will usually guarantee the quality and number of motile sperm available in a sample after thawing. They will try ...
Treatment of sperm with heparin binding proteins prior to cryopreservation showed decreased cryoinjury and generation of ROS. [2] The addition of nerve growth factor as a cryoprotectant decreases sperm cell death rates and increased motility after thawing. [ 3 ]
Asthenozoospermia (or asthenospermia) is the medical term for reduced sperm motility.Complete asthenozoospermia, that is, 100% immotile spermatozoa in the ejaculate, is reported at a frequency of 1 of 5000 men. [1]
Cryos International says on its website that its donors cannot donate to any other sperm bank. In 2021, then-CEO Peter Reeslev told the New York Times that all Cryos donors are made aware of the ...
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.