A generation raised amid the normalization of cannabis is now arriving in emergency rooms with a syndrome that didn't even have an official name until recently. The Centers for Disease Control and Prevention has documented a 16% surge in hospitalizations for cannabis hyperemesis syndrome — a condition marked by violent, cyclical vomiting — concentrated most heavily among Americans aged 15 to 24. What the data quietly reveals is a familiar arc in the history of intoxicants: as a substance becomes more potent, more accessible, and less feared, its costs tend to fall on the youngest and most vuln
Cannabis Hyperemesis Syndrome ER Visits Spike 16% as High-Potency Products Target Younger Users
Millions of Americans experience cannabis hyperemesis syndrome annually, with complications including acute kidney injury, electrolyte imbalances, and in rare cases death.
Symptoms may now emerge within the first year of use
Mark
Why did the CDC suddenly start tracking this condition so carefully? Did something change in the hospitals themselves?
Mimi
The diagnosis code was new. Before 2026, cannabis hyperemesis syndrome didn't have its own official ICD code—doctors had to file it under something else. Once it got its own number, the condition became visible in the data. But that's only part of it. The actual cases were already rising before the code existed.
Mark
So the code didn't create the problem, it just made the problem countable.
Mimi
Exactly. The real shift is in the products and who's using them. THC potency has quadrupled in thirty years. You can buy oils now that are 80, 90 percent pure THC. That's not the same drug.
Mark
And the young people—why are they showing up in the data so prominently? Are they just more likely to go to the ER?
Mimi
That's part of it, maybe. But the researchers were genuinely surprised. They expected chronic use to take years to develop. Instead, they're seeing symptoms within the first year. That suggests the potency itself is doing something different to younger bodies.
Mark
What about the gender shift? The condition used to be mostly young men.
Mimi
That's still not fully understood. But it's showing up in teenage girls and young women now at rates that weren't documented before. It could be related to how the products are marketed, or how they're used. Vaping and dabbing might hit differently depending on body chemistry. The honest answer is we don't know yet.
Mark
So what happens next? Do we regulate the potency?
Mimi
That's the question nobody's answering yet. Colorado and Washington legalized recreational cannabis fourteen years ago. The industry has only gotten stronger since then. The potency keeps climbing. And now we're seeing the medical consequences in real time.
Le Pouls
- Cannabis sold today carries nearly four times the THC potency of what existed in the 1990s, and the bodies of young users are registering that difference in emergency rooms across the country.
- The syndrome — so severe that patients sometimes scream while vomiting — now affects an estimated 2.75 million Americans annually, with complications ranging from kidney injury to, in rare cases, death.
- Researchers were caught off guard by who is getting sick: teenage girls and young women are among the most affected groups, upending the prior assumption that this was a condition requiring years of heavy use to develop.
- High-potency vaping and dabbing products appear to be compressing the timeline, with symptoms emerging in some users within their first year of cannabis use.
- Public health messaging and the medical system are struggling to keep pace with consumption patterns that now mirror the early, underestimated trajectory of the nicotine vaping crisis.
A generation raised amid the normalization of cannabis is now arriving in emergency rooms with a syndrome that didn't even have an official name until recently. The Centers for Disease Control and Prevention has documented a 16% surge in hospitalizations for cannabis hyperemesis syndrome — a condition marked by violent, cyclical vomiting — concentrated most heavily among Americans aged 15 to 24. What the data quietly reveals is a familiar arc in the history of intoxicants: as a substance becomes more potent, more accessible, and less feared, its costs tend to fall on the youngest and most vulnerable first.
The cannabis sold in American dispensaries today bears little resemblance to what existed thirty years ago. Average THC potency has climbed from roughly 4% to about 16% — nearly a fourfold increase — and emergency rooms are now absorbing the consequences. A new CDC report found that hospital visits for cannabis hyperemesis syndrome rose 16% between October 2025 and May 2026. The condition, sometimes called "scromiting" for the screaming it can provoke during vomiting episodes, causes sudden severe nausea, cyclical vomiting, and intense abdominal pain. It only received an official diagnosis code recently, but cases had already doubled between 2017 and 2021, and researchers now estimate 2.75 million Americans experience it each year.
What surprised CDC researchers most was the demographic profile of those getting sick. The surge was concentrated among people aged 15 to 24, with particular prevalence among teenage girls and young women, as well as Black and Native Americans. Lead author Alana Vivolo-Kantor said the prominence of young users was unexpected — the prevailing assumption had been that the syndrome required years of chronic use to develop. The new data suggests otherwise: symptoms may now emerge within the first year of use in some cases, and what was once documented primarily in young men now appears to be affecting young people across the gender spectrum.
Researchers suspect the products themselves are driving the acceleration. High-potency vaping and dabbing methods — which deliver concentrated THC oils at extreme temperatures — may be compressing the onset of symptoms in ways earlier use patterns did not. The parallel to nicotine vaping is difficult to ignore: a delivery mechanism that makes high-concentration drug use easy, discreet, and appealing to people whose brains are still developing. A 2024 medical review warned that the syndrome can lead to acute kidney injury, electrolyte imbalances, and in rare cases death. The question facing public health officials now is whether awareness and messaging can catch up to what the data is already making plain.
The marijuana sold in American dispensaries today is not the marijuana of thirty years ago. The average potency has nearly quadrupled since the 1990s, climbing from around 4% THC to about 16%—a shift documented by the National Institute of Health that has quietly reshaped what it means to use cannabis regularly. And now, emergency rooms across the country are seeing the consequences.
A new report from the Centers for Disease Control and Prevention found that hospital visits for cannabis hyperemesis syndrome jumped 16% between October 2025 and May 2026. The condition announces itself with sudden, severe nausea, cyclical vomiting, and intense abdominal pain that can arrive within hours of a person's last cannabis use. Patients sometimes scream while vomiting—so much so that the informal name for it is "scromiting." Until recently, the syndrome had no official diagnosis code. Now it does: ICD-10-CM code R11.16. That administrative change has made the condition easier to track, but the underlying problem is older and larger. Emergency room cases of cannabis hyperemesis syndrome had already doubled between 2017 and 2021, and researchers now estimate that 2.75 million Americans experience it annually.
What surprised the CDC researchers most was who was getting sick. The spike in emergency visits was concentrated among people aged 15 to 24, with particular prevalence among teenage girls and young women. It also showed up disproportionately in Black Americans and Native Americans. Alana Vivolo-Kantor, the study's lead author and an associate director for science at the CDC's Division of Overdose Prevention, told the Associated Press that the prominence of young users was unexpected. The assumption going in, she said, was that chronic cannabis use took time to develop. But the data suggested something else: young people were using cannabis heavily, and they were using it early.
The medical picture is troubling. A 2024 review published in Gastroenterology warned that cannabis hyperemesis syndrome can lead to acute kidney injury, electrolyte imbalances, and in rare cases a collapsed lung or death. Historically, the condition had been documented mostly in young men aged 16 to 34 who had years of heavy use behind them. But the CDC's new analysis found evidence that symptoms may now emerge much sooner—within the first year of cannabis use, in some cases. The gender breakdown has shifted too. What was once seen as primarily a male problem now appears to be affecting young people across the gender spectrum.
Vivolo-Kantor and her colleagues suspect the rise in young users experiencing the syndrome is tied to the products themselves. High-potency strains and concentrated THC products—particularly those designed for vaping or "dabbing," a method that involves inhaling highly concentrated THC oils heated to extreme temperatures—may be accelerating the onset of symptoms. The researchers noted that more data is needed, but the pattern is suggestive. Younger users are starting cannabis use earlier in their lives. The public perception of risk has softened. And the delivery mechanisms have become easier and more potent. It's a combination that echoes what happened with nicotine vapes: electronic devices that make it simple to consume high concentrations of a drug, especially for people whose brains are still developing. The question now is whether the medical system, and public health messaging, can catch up to what the data is already showing.
Citations marquantes
The assumption going in was, 'well, how can they have chronic use?' How early were they using cannabis?— Alana Vivolo-Kantor, CDC health scientist and lead author of the study
Envie de l'histoire complète ?
Lire l'original sur Gizmodo ↗
Health & Medicine