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Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome. [10] These complications commonly include infertility and small, poorly functioning testicles (if present).
There is increasing evidence that the harmful products of tobacco smoking may damage the testicles [32] and kill sperm, [33] [34] but their effect on male fertility is not clear. [35] Some governments require manufacturers to put warnings on packets. Smoking tobacco increases intake of cadmium, because the tobacco plant absorbs the metal.
As of 2010, there have been at least 11 reported cases of fertility in humans with ovotesticular syndrome in the scientific literature, [4] with one case of a person with XY-predominant (96%) mosaic giving birth. [30] All known offspring have been male. [31] There has been at least one case of an individual being fertile as a male. [28]
Sterility is the inability to produce a biological child, while infertility is the inability to conceive after a certain period. [1] Sterility is rarely discussed in clinical literature and is often used synonymously with infertility. Infertility affects about 12-15% of couples globally. [2] Still, the prevalence of sterility remains unknown.
It is the most common birth defect of the male genital tract. [1] About 3% of full-term and 30% of premature infant boys are born with at least one undescended testis. [2] However, about 80% of cryptorchid testes descend by the first year of life (the majority within three months), making the true incidence of cryptorchidism around 1% overall.
“Overall, birth order is not the only aspect of quality or successful pairings in couples. Instead, couples [should] focus on knowing how birth order impacts themselves and their partners.
Teenage boys are suffering from depression and anxiety too, research shows. Experts warn many young men struggling with their mental health are not getting the help they need.
Most XX males have a typical male-type phenotype at birth, so diagnosis tends to occur either at the onset of puberty, if traits such as gynaecomastia develop and are investigated, or later, when investigating infertility. [9] [24] Diagnosis at birth occurs more frequently in SRY-negative individuals, who are more likely to have ambiguous ...