Government-shaking protests in Bangladesh, Iran, Nepal and Sri Lanka – to name a few – have all in recent years been linked to what demographers call a “youth bulge.” Meanwhile, the economic slowdown in China and ballooning public debt in the United States are in part due to the two powers’ aging populations. In contrast, recent economic growth in Brazil, India and Vietnam reflects a “demographic dividend” of the economically active.
Demographic trends are fueling some of the events reshaping the world. But what exactly are these age-related phenomena, and why are they having such an impact now? I explored these issues in depth in my 2024 book “Demography and the Making of the Modern World.”
