Fertility rates are declining in nearly every country with notable exceptions in sub-Saharan Africa.
Interestingly, research (Eisenberg et al, 2021) in the United States has demonstrated that while fertility rates in that country are in decline, biological fecundity – meaning the physiological ability to conceive among reproductive age women in the general population – has remained relatively stable.
On a global scale falling total fertility rates are primarily the result of socio-economic factors and the growing number of women in the workforce.
A study by C. Goldin (Goldin, 2006) highlighted that engagement of women in the workplace exposed many to a dual burden. On one side, they had tasks for work for which they were paid, and on the other side they were left with domestic duties for which they were not compensated.
Goldin emphasised that fertility rates had more profoundly dropped in southern European countries where men’s involvement at home was limited. Conversely, total fertility rates remained higher in Nordic countries where men were typically more involved in domestic tasks.
In her book Father Time, American anthropologist and primatologist, Sarah Blaffer Hrdy, highlights the benefits that men encounter when being involved in infant care. These include hormonal elevations that control well-being and pleasure.
Enacting paid parental leave for fathers and mothers encourages the involvement of men in infant care.
In all, we believe the current fertility decline is not necessarily bound to be definitive. Indeed, there is hope that the The Time of Men will bring a resurgence in natality (de Ziegler et al, 2026).
References
de Ziegler D, Sean S, Toner JP. ‘The Time of Men: Can their involvement in the domestic sphere revive birth rates?’ Fertil Steril. 2026.
Eisenberg ML, Thoma ME, Li S, McLain AC. ‘Trends in time-to-pregnancy in the USA: 2002 to 2017’. Human Reproduction. 2021;36(8):2331–8.
Goldin C. ‘The quiet revolution that transformed women's employment, education, and family’. American Economic Review. 2006;96(2):1–21.



