“Is it okay to still have children?” Congresswoman Alexandria Ocasio-Cortez asked her social media followers in 2019. She was addressing a growing reluctance among young people to consider parenting; both because of concerns about overpopulation and because of concerns about what kind of world new children would be coming into. This openness about rethinking parenthood is recent, but it’s happening in the context of a much longer global decline in births. That decline, steadily underway for the past 50 years, may be accelerating. Between 2019 and 2020, births declined 1.12 percent; the following year that number rose to 1.13 percent; the latest decline reported between 2021 and 2022 is 1.15 percent.
Why is this happening? The word “multifactorial” doesn’t begin to cover it. You hear a lot about women and education, and access to contraception. People also float the possibility of environmental toxins. You might not think of your social network as an environmental toxin, but that’s the idea Alexander Suvorov put forward last year in a paper published in the journal Endocrinology. Suvorov, a biologist at the University of Massachussetts Amherst, thinks that changes in our social environment are somehow contributing to the drop in reproduction. I was startled by this idea so I asked him to take me through it. Our interview has been edited and condensed for clarity.
Sally Adee
This is a really hard question to untangle.
Alexander Suvorov
As always in science, when you try to address a complicated question, the approach is to split it into much smaller questions.
By answering smaller questions, you can gradually build a mosaic, to arrive at a big picture. One example: in mice and small rodents, it is well-documented in laboratory experiments, and also in wildlife, that population density, or just social interactions, generate stress. And you can measure this stress by corticosteroid hormones in blood. So what about humans? For example, if you meet with many people over the day, will the level of corticosteroids be higher in your blood? Nobody knows. It would be a simple test, but no one has tried to measure this.
Or for example, let’s say you spend all your day sitting in front of the computer, interacting with thousands of people via Facebook. Will your body generate an increased stress response? Again, that is a very simple question that can be answered by a very simple questionnaire asking people how much time they spend on Facebook and measuring the corticosteroid levels. But nobody ever did that.
SA
How come? I mean, that seems like such a basic idea. Especially in light of all the conversations around the online safety act. People are constantly talking about the harmful effects of social media – why hasn’t anybody tried to quantify it in this way?
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