Falling fertility on the left as key driver of US birth decline
paulpauper
53 points
100 comments
July 05, 2026
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Discussion Highlights (15 comments)
pkulak
Oh great, Idiocracy as a scientific paper.
novia
Captain Planet literally told children who cared about environmentalism to "keep families small" to save our planet. https://youtu.be/tZCg9HsDntY It's not difficult to take that to the next logical conclusion, no children means less resources used.
bm3719
The left reproduces indirectly, so this isn't as much of a problem as they might think. In fact, I'd say it's the opposite of the surface conclusion. If the left reproduces via external means (e.g., media), then they've effectively outsourced biological reproduction and all its costs to the right. The right will successfully reproduce their political alignment sometimes, of course, but they also effectively act as the breeder population for the left. The right expends the resources bootstrapping civilization into their biological offspring, Oedipalizing them into the world as linguistic subject, which ends up being the vector for the brood parasitism of their own socio-cultural opponents. So, if you're the right, you're the host of this parasitism, and should be looking for some kind of antiparasitic social solution in the form of impenetrable cultural barriers.
postflopclarity
seems like an odd choice to so emphatically phrase this as a quality of "the left" when there are so clearly many plausible confounding factors (education, wealth, employment status, do you live in a small city apartment, etc.)
_aavaa_
One thing that appears to be missing is any mention of non-heterosexual couples, some of which are biologically incapable of having their own children and it's unclear how adoption or surrogacy gets counted in here. And I think it's fair to say that in the US non-heterosexual people are overwhelmingly on the left, for fairly obvious reasons.
homeonthemtn
Everything about this thread is weird and woefully online. As an n of 1, we are surrounded by so many births that we just trade baby gear since we are either a handful of months ahead or behind many other parents. Our assumption was that we were in a stealth baby boom. Truly everyone we know has a minimum of one very young child with a high number of parents with between 2 and 4. It certainly runs counter to many online discussions but reality often does.
julianlam
Every time this sort of news pops up, I think "why aren't they incentivising and subsidizing fertility treatment"? You want to raise the fertility rate, yes? You could convince an entire population to have more babies the hard way (social or economic pressure). Or literally just let the people who are already trying, but can't for some physiological reason, have one. They already want children, if they're pursuing fertility treatment, they're already decently well off, too. To me it seems like a very obvious, targeted solution!
comrade1234
Just like there's a natural selection to those with religious beliefs (and active killing of those without) there's probably active selection to those with conservative beliefs like raiding a family, a desire to teach their values to their children, producing as many children as possible - values that correlate with conservatives.
SilverElfin
I’ve also noticed fertility is high among certain immigrant demographic groups. Near me, it’s refugee groups (asylum applicants) where families very typically have 4 or more kids. In a couple decades I can see the demographics being very different in America, but especially Europe. It’ll probably look more brown, more Islamic relative to today. What’s interesting to me is that these groups are very effective at making use of programs we have to help families and subsidize costs. But I feel like Americans generally are less aware of these programs or decide they can’t afford children without considering this help.
cosmic_cheese
My take on this as someone who swings left is that desire for children isn’t meaningfully lower among the left, but would-be parents want to provide quality of life that is as good or preferably significantly better than that of their own childhoods. This rolls in several other assumptions, such as reasonable assurance of financial stability, low housing and relationship drama, capacity to take unexpected disaster in stride, all while having enough headroom for occasional travel and vacation. If clearing that bar isn’t feasible, starting a family is delayed until it is. The problem is that many will never achieve that before aging out of the opportunity, due to it becoming increasingly difficult to climb that ladder. Many millennials for example only got to a point where they felt like they could stand on their own two feet in their 30s, which is the starting line for providing the desired quality of life for children. I don’t think this is a bad thing to desire. People like this tend to be good, thoughtful parents if they manage to endure the marathon and reach the finish line in time. It’s just out of reach for many, and nobody cares to even try to fix that.
_8L34K
It seems the paper conflates "fertility" and "reproductive rate". Which is akin to conflating "soil fertility" and gross yields. It also seems many comments here have not picked up on that.
int_19h
Isn't this simply because the political realignment in US resulted in an arrangement where higher incomes generally correlate with left-wing political views? And it's not exactly a new thing that higher incomes also correlate with fewer children. Indeed, they also point out that the finding only holds true for US whites but not for blacks. Which is also consistent with this being just a reflection of economic status.
OutOfHere
Left-wing women wait till they're 40, and then it's too late. They're not as sensible they pretend to be. The left has culturally brainwashed itself into believing that having children later is okay, but it's not. Muslims are the only exception.
abeppu
I didn't read the full paper only the abstract, but bc the political spectrum is correlated with education level or urban vs rural or multiple other factors that deeply impact what it is like to have kids. Of urban college educated professionals, do the conservatives still have more kids than the progressives? Or does the opportunity cost on careers plus the high cost of childcare plus the cost of living space impact conservatives and progressives alike? And among rural people without a college degree, do progressives still have fewer kids than their conservative neighbors? When a bunch of demographic factors are all not just correlated but are linked to challenges in raising kids, it seems like elevating a single one of those factors is selective framing
Balgair
I hang out on fertility related sites and on twitter. It's an odd bunch. You have hardcore Jewish rabbis hanging with radical imams and dyed-in-the-wool Chinese communists and everyone in between. It's an issue, like climate change, that effects us all equally. No one has any good ideas about the root causes nor the solutions. It's apartments, it's land use taxes, it's cost of living, it's governmental policy. Sure, some new study like this one, will come along and add in a new wrinkle. But it really seems, to me at least, that the fertility issue is a multi-faceted one with no clear causes nor clear solutions. Now, once we discover whatever the recipe for fertility decline is, then all those partisans and religious nutters will scatter and then go right back to hating each other. But for now, they play nice. There's a lesson in there, but I'm not sure what it is. Again, it's a weird little sub domain.