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Pre-implantation genetic screening reduces both ongoing pregnancy and live birth rates in over 35s

Preimplantation genetic screening (PGS) does not increase ongoing pregnancy or live birth rates in women over 35 undergoing IVF. The technique's effectiveness has been called into question due to various limitations, including the potential for biopsy errors and chromosomal analysis biases.

SourceEuropean Society of Human Reproduction and Embryology·JournalNew England Journal of Medicine·DateJul 4, 2007

Ethiopian development raises birth rate

A study in rural Ethiopia found that a tapped water supply reduced the time spent carrying water, leading to improved child survival but also increasing birth rates and childhood malnutrition. The researchers suggest that development projects should be multisectoral to avoid long-term problems.

SourceUniversity of Bristol·JournalPLOS Medicine·DateFeb 13, 2006

Ethiopian water programme raises birth rate; viral encephalitis study

A study by Gibson and Mace found that villages with improved water supply in rural Ethiopia experienced a significant increase in birth rates, contradicting the expected reduction in fertility. The researchers suggest that development programs should be more comprehensive, incorporating access to contraceptives.

SourcePLOS·JournalPLOS Medicine·DateFeb 13, 2006

The first baby boom

Researchers Bocquet-Appel and Naji found a sudden 20-30% increase in birth rates worldwide during the Neolithic period, as indicated by an abrupt change in skeletal evidence. This finding corroborates a global demographic transition, with archaeological evidence showing parallels between Europe, North Africa, and the Americas.

SourceUniversity of Chicago Press Journals·JournalCurrent Anthropology·DateJan 3, 2006

Egg-sharing does not damage a donor’s own chance of a baby say UK researchers

A study by the Lister Fertility Clinic in London found that women who participated in an egg-sharing program did not have a lower chance of getting pregnant or having a live birth compared to those who didn't participate. The researchers also found no evidence of increased risk of ovarian hyperstimulation syndrome among donors.

Rapid Population Growth Is Still A Problem

Rapid population growth is projected for Africa, Asia, and Latin America due to high fertility rates and declining mortality rates. In contrast, developed countries like Europe, North America, and Japan face below-replacement levels of fertility, but may experience modest increases in population.

SourcePopulation Council·JournalScience·DateOct 15, 1998

Reduced Access Lowers Abortion Rates

Researchers found that restrictive policies, such as Medicaid funding limits and 24-hour waiting periods, significantly reduced access to abortion services, leading to a decline in abortion rates. Meanwhile, increased birthrates were observed in regions with limited access to reproductive health services.

SourcePenn State·JournalFamily Planning Perspectives·DateDec 2, 1997