Pregnancy over age 50 Menopause

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Pregnancy over age 50 has, over recent years, become more possible for women, due to recent advances in assisted reproductive technology, in particular egg donation. Typically, a woman's fecundity ends with menopause, which by definition is 12 consecutive months without having had any menstrual flow at all. During perimenopause, the menstrual cycle and the periods become irregular and eventually stop altogether, but even when periods are still regular, the egg quality of women in their forties is typically dramatically lower than in younger women, making the likelihood of conceiving a healthy baby also dramatically lower, particularly after age 42. Men, in contrast, generally remain fertile throughout their lives, although the risk of genetic defects is greatly increased due to the paternal age effect. Other sources claim that men might experience a decline in fertility starting in their late 30s.

In the United States, between 1997 and 1999, 539 births were reported among mothers over age 50 (four per 100,000 births), with 194 being over 55.

The oldest mother to date to conceive, was 71 years, and the youngest mother, 5 years old. According to statistics from the Human Fertilisation and Embryology Authority, in the UK more than 20 babies are born to women over age 50 per year through in-vitro fertilization with the use of donor oocytes (eggs).

Maria del Carmen Bousada de Lara is the oldest verified mother; she was aged 66 years 358 days when she gave birth to twins; she was 130 days older than Adriana Iliescu, who gave birth in 2005 to a baby girl. In both cases the children were conceived through IVF with donor eggs. The oldest verified mother to conceive naturally (listed currently as of 26 January 2017 in the Guinness Records) is Dawn Brooke (UK); she conceived a son at the age of 59 years in 1997 while taking oestrogen.


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Medical considerations

The risk of pregnancy complications increases as the mother's age increases. Risks associated with childbearing over the age of 50 include an increased incidence of gestational diabetes, hypertension, delivery by caesarean section, miscarriage, preeclampsia, and placenta previa. In comparison to mothers between 20 and 29 years of age, mothers over 50 are at almost three times the risk of low birth weight, premature birth, and extremely premature birth; their risk of extremely low birth weight, small size for gestational age, and fetal mortality was almost double.


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Cases of pregnancy over 50

Facts about the conception of pregnancies in this age group can be difficult to determine, but they are nearly always due to the use of IVF with donor eggs.


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Debate

Pregnancies among older women have been a subject of controversy and debate. Some argue against motherhood late in life on the basis of the health risks involved, or out of concern that an older mother might not be to give proper care for a child as she ages, while others contend that having a child is a fundamental right and that it is commitment to a child's wellbeing, not the parents' ages, that matters.

A survey of attitudes towards pregnancy over age 50 among Australians found that 54.6% believed it was acceptable for a postmenopausal woman to have her own eggs transferred and that 37.9% believed it was acceptable for a postmenopausal women to receive donated ova or embryos.

Governments have sometimes taken actions to regulate or restrict later-in-life childbearing. In the 1990s, France approved a bill which prohibited postmenopausal pregnancy, which the French Minister of Health at the time, Philippe Douste-Blazy, said was "...immoral as well as dangerous to the health of mother and child". In Italy, the Association of Medical Practitioners and Dentists prevented its members from providing women aged 50 and over with fertility treatment. Britain's then-Secretary of State for Health, Virginia Bottomley, stated, "Women do not have the right to have a child; the child has a right to a suitable home". However, in 2005, age restrictions on IVF in the United Kingdom were officially withdrawn.

Legal restrictions are only one of the barriers confronting women seeking IVF, as many fertility clinics and hospitals set age limits of their own.

Source of the article : Wikipedia



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