Population tipping point could arrive by 2030

Two point one: That’s how many children everyone able to give birth must have to keep the human population from beginning to fall. Demographers have long expected the world will dip below this magic number—known as the replacement level—in the coming decades. A new study published last month in The Lancet , however, puts the tipping point startlingly near: as soon as 2030. It’s no surprise that fertility is dropping in many countries, which demographers attribute to factors such as higher education levels among people who give birth, rising incomes, and expanded access to contraceptives. The United States is at 1.6 instead of the requisite 2.1, for example, and China and Taiwan are hovering at about 1.2 and one, respectively. But other predictions have estimated more time before the human population reaches the critical juncture. The United Nations Population Division, in a 2022 report, put this tipping point at 2056, and earlier this year, the Wittgenstein Centre for Demography and Global Human Capital, a multidisciplinary research organization dedicated to studying population dynamics, forecasted 2040. Christopher Murray, co-author of the new study and director of the University of Washington’s Institute for Health Metrics and Evaluation (IHME), suspects his study’s forecast is conservative. “With each passing year … it’s becoming clearer that fertility is dropping faster than we expect,” he says. Because the 2030 figure i...
Source: Science of Aging Knowledge Environment - Category: Geriatrics Source Type: research