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Prevalence of infertility varies depending on the definition, i.e. on the time span involved in the failure to conceive. Infertility rates have increased by 4% since the 1980s, mostly from problems with fecundity due to an increase in age. [89] Fertility problems affect one in seven couples in the UK.
The World Bank is a United Nations international financial institution, a component of the World Bank Group, and a member of the United Nations Development Group, but it also collects and analyses information on demography issues based on international and national sources: (1) United Nations Population Division: World Population Prospects, (2 ...
Female infertility refers to infertility in women. It affects an estimated 48 million women, [2] with the highest prevalence of infertility affecting women in South Asia, Sub-Saharan Africa, North Africa/Middle East, and Central/Eastern Europe and Central Asia. [2]
A 2023 map of countries by fertility rate. Blue indicates negative fertility rates. Red indicates positive rates. The total fertility rate (TFR) of a population is the average number of children that are born to a woman over her lifetime, if they were to experience the exact current age-specific fertility rates (ASFRs) through their lifetime, and they were to live from birth until the end of ...
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In medicine, fertility refers to the ability to have children, and infertility refers to difficulty in reproducing naturally. [4] 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 ]
However, the exact estimates of the chances of a woman to conceive after a certain age are not clear, and are subject to debate. [11] According to the National Institute for Health and Care Excellence (NICE) over 80 out of every 100 women aged under 40 who have regular unprotected sexual intercourse will get pregnant within 1 year of trying. In ...
The male infertility crisis is an increase in male infertility since the mid-1970s. [91] 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.