Fertility decline; no mystery
نویسندگان
چکیده
منابع مشابه
Fertility decline; no mystery
The economic opportunity hypothesis states that perceived shrinkage of opportunity discourages women or couples from embarking on marriage or reproduction. On the contrary, the sense that opportunity is expanding encourages couples to raise their family-size target. The hypothesis assumes that humans are genetically programmed to maximize successful reproduction by having more offspring when en...
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Cryopreservation of eggs or ovarian tissue to preserve fertility for patients with cancer has been studied since 1994 with R G Gosden’s paper describing restoration of fertility in oophorectomised sheep, and for decades previously by others in smaller mammals. Clinically this approach has shown great success. Many healthy children have been born from eggs cryopreserved with the Kuwayama egg vit...
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Thailand is 1 of the third world countries in which a very substantial fertility decline has occurred during the last 2 decades. However, there has been some recent concern, based on fertility rates derived from 3 national contraceptive prevalence surveys conducted in 1978/1979, 1981, and 1984, that the fertility decline may have lost momentum at a level well above replacement fertility. New ...
متن کاملEvidence of fertility decline in Karachi.
Demographic transition in Pakistan produced an annual growth rate of over 4% in urban areas as compared to 3% for Pakistan as a whole with lower mortality and higher marital fertility in urban areas and rural to urban migration. Primarily, the data of the project "Metropolitan Women's Productive Choices" were utilized along with findings of the Pakistan Contraceptive Prevalence Survey (PCPS) o...
متن کاملLithuania: Fertility decline and its determinants
Since the beginning of the 1990s, Lithuania has been undergoing significant transformations in family life and has experienced a precipitous decline in fertility. The determinants of the changes are diverse in character and are associated with socioeconomic transformations, economic difficulties faced by the post-Soviet society, inadequate social and family policies and changing value orientati...
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ژورنال
عنوان ژورنال: Ethics in Science and Environmental Politics
سال: 2002
ISSN: 1863-5415,1611-8014
DOI: 10.3354/esep002001