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A major cause of female infertility is premature ovarian insufficiency. [54] This insufficiency is a heterogeneous disease that affects about 1% of women who are under the age of 40. [54] Some instances of female infertility are caused by DNA repair dysregulation during meiosis. [54]
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 ...
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]
In medicine, the definition of fertility is "the capacity to establish a clinical pregnancy." [ 23 ] Women have hormonal cycles which determine when they can achieve pregnancy. The cycle is approximately twenty-eight days long, with a fertile period of five days per cycle, but can deviate greatly from this norm.
Advanced maternal age, in a broad sense, is the instance of a woman being of an older age at a stage of reproduction, although there are various definitions of specific age and stage of reproduction. [1] The variability in definitions is in part explained by the effects of increasing age occurring as a continuum rather than as a threshold effect.
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 ...
Fertility factor (demography) Fertility factors are determinants of the number of children that an individual is likely to have. Fertility factors are mostly positive or negative correlations without certain causations. Factors associated with increased fertility include the intention to have children, [1] remaining religiosity, [2] general ...
Sexual and reproductive health (SRH) [1] is a field of research, health care, and social activism that explores the health of an individual's reproductive system and sexual well-being during all stages of their life. [2][3][4] Sexual and reproductive health is more commonly defined as sexual and reproductive health and rights, [5] to encompass ...