Today’s high paternal ages at childbirth are not exceptionally high
Recently, mean paternal ages at childbirth have risen sharply. This has alarmed researchers from a wide range of fields as offspring of older fathers have higher health risks. However, existing ... Read more
Intimate partner violence and low birth weight in Colombia
Stefania Molina’s research reveals that, in Colombia, separated and cohabiting mothers experience higher levels of intimate partner violence during pregnancy than married mothers. Disparities in low birth weight across partnership ... Read more
Heterogeneity in realization of short-term fertility intentions across Europe
The realization of fertility intentions varies greatly across Europe. Zsolt Spéder and Lajos Bálint find that labour market stability, low inflation, strong welfare state involvement, and cultural attitudes emphasizing the ... Read more
Are grandparents happier? Family ties and depression in later life
Are grandchildren beneficial to mental health in old age? Using advanced statistical techniques and data from 160,000 individuals across Europe, Elisa Brini and Francesca Zanasi challenge this common belief: family ... Read more
Lessons from Poland’s pro-natalist “Family 500+” program
Poland’s ambitious “Family 500+” program offered substantial monthly payment to families with children. While the program modestly increased overall fertility in the short-term, its effects varied significantly by age and ... Read more
Slow growth of the U.S. unauthorized foreign-born population during the 2010s
Despite a large number of unauthorized immigrants entering the United States across the U.S.-Mexico border, the size of the undocumented foreign-born population remained almost constant at around 11 million between ... Read more
Did you know?
Number of international migrants worldwide and as a share of the global population, 1990-2024
The number of international migrants worldwide is estimated by the United Nations in 304 million in 2024, almost doubling in comparison to 1990 (154 ml). In the same period of time their share of the world population has increased from 2.9% to 3.7%.
Source: United Nations (2025), International Migrant Stock 2024.
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About N-IUSSP
N-IUSSP is a new IUSSP news magazine, which will disseminate scientific findings from demographic research carried out all over the world. The practical implications of current trends, the risks and potentialities of emerging situations, the pros and cons of specific laws are discussed in rigorous but plain language.
You are invited to contribute to this new publication: please check our guidelines and submit your 1000 word contribution to contact@niussp.org
