On June 29, the data blogger Crémieux — a fixture of the rationalist and tech-adjacent corner of X — posted that everyone should wake up to a trend: in the West, rich people are making their kids taller, and in South Korea it has already gone mass-market. The post quoted a claim that a million teenagers in South Korea are taking human growth hormone, and did 1.4 million views.

We went and read the Korean reporting the claim traces back to. The short version: the phenomenon is real, arguably worse than the tweet suggests — and the headline number is being misread.

What the Korean data actually says

The Korea JoongAng Daily reported in January on what it plainly calls a hormone-treatment craze. The hard numbers, from Korean health-insurance review data:

  • Growth-hormone prescriptions for minors went from 895,011 cases in 2020 to 1,621,154 cases in 2024 — nearly double in four years.
  • The money followed: 59.7 billion won to 159.2 billion won over the same window, a 2.6x increase.
  • Reported serious adverse reactions went from 9 in 2020 to 165 in 2024 — an 18x rise that tracks the volume, including cases of pneumonia.

Here’s the catch on the viral figure: those 1.6 million are prescription cases, not teenagers. A child on a year of monthly injections shows up in that data again and again. “A million Korean teens are on HGH” is a misreading — the honest sentence is “Korean clinics wrote 1.6 million growth-hormone prescriptions for minors in one year,” which is still an extraordinary sentence. The trend survives the fact-check; the specific number doesn’t.

The market that grew around it

What makes the Korean case a preview rather than a curiosity is how ordinary the infrastructure has become. Per the JoongAng Daily: clinics sell a growth-plate X-ray assessment for about 100,000 won ($70) as the entry product. The full workup — blood tests, ultrasounds — runs near 600,000 won. The injections themselves can exceed 1 million won a month, and the marketing pushes a “golden time” of ages 5 to 9, concentrated in affluent districts like Gangnam. Ads have promised “10 centimeters up” and “15 centimeters in six months” — claims blatant enough that the government has started inspecting clinics for misleading advertising.

The medical establishment is not on board. Professor Suh Byung-kyu, a pediatrician at Seoul St. Mary’s Hospital, told the paper the injections are recommended for clearly defined conditions — growth-hormone deficiency, Turner syndrome — and that prescribing them to large numbers of ordinary children is not right. A child who is small but growing normally may see little effect at all. That’s the expert consensus everywhere, and it’s losing to the waiting room.

Why this is a class story

Strip the medicine away and look at the economics. At a million won a month for years, buying centimeters is gated behind serious family income — which means height, already one of the most brutally sorted traits in dating and hiring, is becoming something money can directly purchase in childhood. The adult version of this trade, limb lengthening, costs six figures and involves breaking your legs; the pediatric version is a subscription in a nice clinic. Same transaction, better interface, younger patient — and a patient who, at age 7, did not exactly consent to the protocol.

That’s what Crémieux’s corner of the internet is actually responding to, and why the post came from there rather than from a looksmax forum. For an audience that already discusses embryo selection over coffee, parental heightmaxxing isn’t a moral panic — it’s an obvious next market. When that crowd starts saying “wake up to this trend,” they don’t mean stop it. They mean price it in.

Where we land

The claim was directionally right and numerically wrong, which is the most dangerous kind of viral claim — a fact-check that says “well, actually, it’s prescription cases” sounds like a debunk while confirming the entire premise. Korean parents are buying height at industrial scale, the side-effect curve is bending the wrong way, doctors are objecting on the record, and the marketing is aimed at five-year-olds.

The forums spent a decade arguing about whether height is over (it isn’t). The clinics stopped arguing and opened a business. The rest of the world’s wealthy parents are, if the post’s 1.4 million viewers are any indication, taking notes.