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Age and female fertility. Female fertility is affected by age and is a major fertility factor for women. A woman's fertility is in generally good quality from the late teens to early thirties, although it declines gradually over time. [1] Around 35, fertility is noted to decline at a more rapid rate. [1] At age 45, a woman starting to try to ...
Female infertility refers to infertility in women. ... The average age of a girl's first period is 12–13 (12.5 years in the United States, [4] 12.72 ...
Male infertility is responsible for 20–30% of infertility cases, while 20–35% are due to female infertility, and 25–40% are due to combined problems in both parts. [2] [5] In 10–20% of cases, no cause is found. [5] The most common cause of female infertility is age, which generally manifests in sparse or absent menstrual periods. [6]
Fertility. Fertility in colloquial terms refers the ability to have offspring. In demographic contexts, fertility refers to the actual production of offspring, rather than the physical capability to reproduce, which is termed fecundity. [1][2] The fertility rate is the average number of children born during an individual's lifetime. In medicine ...
In the US, the average age at which women bore their first child advanced from 21.4 years old in 1970 [11] to 26.9 in 2018. [4]The German Federal Institute for Population Research claimed in 2015 the percentage for women with an age of at least 35 giving birth to a child was 25.9%.
Cumulative percentage and average age for women reaching subfertility, sterility, irregular menstruation and menopause. [12] Regarding age and female fertility, fertility starts at onset of menses, typically around age 12-13 [55] [56] [57] Most women become subfertile during the early 30s, and during the early 40s most women become sterile. [12]
The Department of Health and Human Services says around 9 percent of men and 11 percent of women of reproductive age have experienced fertility problems in the US. Around one in six globally are ...
The mean age at childbearing indicates the age of a woman at their childbearing events, if women were subject throughout their lives to the age-specific fertility rates observed in that given year. [1] In countries with very high fertility rates women can have their first child at a much younger age than the mean age at childbearing.