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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 ...
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 a few ...
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]
Hims reports that the respondents who used their phone more than 20 times per day had a 30% increased risk for lower sperm concentration and 21% increased risk for total sperm count to be below ...
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 ...
Sperm. Sperm (pl.: sperm or sperms) is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction (forms in which there is a larger, female reproductive cell and a smaller, male one). Animals produce motile sperm with a tail known as a flagellum, which are known as spermatozoa, while some red algae and fungi produce non ...
Nearly 50 years of research links two common insecticides used in food, yards and households to dramatically lower sperm count in men worldwide, a new study found.
A 1992 World Health Organization report described normal human semen as having a volume of 2 mL or greater, pH of 7.2 to 8.0, sperm concentration of 20×10 6 spermatozoa/mL or more, sperm count of 40×10 6 spermatozoa per ejaculate or more, and motility of 50% or more with forward progression (categories a and b) of 25% or more with rapid ...