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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.
A clinical definition of infertility by the WHO and ICMART is "a disease of the reproductive system defined by the failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse." [58] Infertility can further be broken down into primary and secondary infertility.
In general, infertility or subfertility [5] in humans is defined as not being able to conceive a child after one year (or longer) of unprotected sex. [6] The antithesis of fertility is infertility , while the antithesis of fecundity is sterility .
The American Society of Reproductive Medicine recently broadened their definition of infertility to be inclusive of single and LGBTQ+ people.
Male infertility is commonly due to deficiencies in the semen, and semen quality is used as a surrogate measure of male fecundity. [7] More recently, advance sperm analyses that examine intracellular sperm components are being developed.
Reproductive endocrinology and infertility (REI) is a surgical subspecialty of obstetrics and gynecology that trains physicians in reproductive medicine addressing hormonal functioning as it pertains to reproduction as well as the issue of infertility.
Put simply, having low T doesn’t necessarily mean you’re infertile. It’s also very important to note that treating infertile men with testosterone makes infertility worse, not better.
The investigators measured the relationship between the age of the female partner and fertility. (Infertility rates today are believed to be higher in the general population than for the population in this study from the 1950s.) This 1957 study found that: [22] By age 30, 7% of couples were infertile; By age 35, 11% of couples were infertile