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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]
Azoospermia is the medical condition of a man whose semen contains no sperm. [1] It is associated with male infertility, but many forms are amenable to medical treatment.In humans, azoospermia affects about 1% of the male population [2] and may be seen in up to 20% of male infertility situations in Canada.
The diagnosis of infertility causes many males to question their masculinity.Male factor infertility is frequently associated with high levels of social stigma; for example, in a study exploring the views of fertile individuals towards infertile men and women, Miall (1994) [6] found that male infertility was frequently seen as arising from sexual dysfunction and was thus associated with higher ...
More worrying, the decline seems to be speeding up—by the calculations of one male fertility founder, sperm counts have fallen by 50% to 60% over the last four decades.
Infertility is the inability of a couple to reproduce by natural means. It is usually not the natural state of a healthy adult. Exceptions include children who have not undergone puberty, which is the body's start of reproductive capacity. It is also a normal state in women after menopause.
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 ...
Paul J. Turek. Dr. Paul J Turek (born July 8, 1960, Manchester, Connecticut) is an American physician and surgeon, men's reproductive health specialist, and businessman. [1] Turek is a recent recipient of a National Institutes of Health (NIH) grant for research designed to help infertile men become fathers using stem cells. [2][3][4][5]
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