New study reveals nitrous oxide misuse deaths are steeply increasing



Canisters of Galaxy Gas, a nitrous oxide product often carried by smoke shops and online sellers. (Credit: Galaxy Gas)

An anesthetic most often used at the dentist or doctor’s office, nitrous oxide or “laughing gas” has been misused recreationally for decades in the form of whipped cream chargers, often called “whippets.” 

Research from a University of Illinois professor shows an alarming rise in fatalities associated with the drug in the last decade, potentially driven by efforts to mass-market products to a new generation. 

In the study, “US nitrous oxide mortality” published in JAMA Network Open and co-authored by Health and Kinesiology Assistant Professor Rachel Hoopsick and University of Mississippi Assistant Professor of Public Health Andrew Yockey, the researchers tracked the number of deaths in the United States associated with nitrous oxide misuse from 2010 to 2023, using Centers for Disease Control and Prevention data.

In that timeframe, U.S. annual deaths from nitrous oxide poisoning are up by nearly 600%, the study found. Of the 1,240 reported deaths during that period, 74% occurred in the last 7 years.

“I think we are currently at the bottom of a hill,” said Hoopsick. “Without any type of regulatory intervention, deaths and poisonings from nitrous oxide will increase at an accelerating rate and become a tremendous public health issue.” 

For reference, 23 users of nitrous oxide died from the drug in 2010, compared to 156 in the year 2023. two factors make the picture look even worse: the sale of nitrous oxide is largely unregulated, and unlike most “party drugs,” users can die after inhaling it just once. 

“This product is killing kids, it’s killing young adults,” Yockey said. “There’s no clear intention for using this product recreationally. Our message at the end of the day is: no one should be dying from nitrous oxide poisoning, at all.”

The number of annual deaths associated with nitrous oxide misuse has leapt by 600% in the last 14 years, according to a new study published in JAMA Network Open. (Source: “US nitrous oxide mortality”)

Repackaged for a new generation

Hoopsick and Yockey are frequent collaborators on research into substance use and mortality, often studying highly addictive drugs like methamphetamine and heroin.  

A woman with a blue shirt, brown hair and a black blazer smiles for a portrait inside an academic building.
Rachel Hoopsick (Provided)

Until recently, Yockey wasn’t convinced nitrous oxide misuse had become a public health issue. During a class he taught on substance abuse, he initially dismissed whippets as a fad of the past. 

“A student raised their hand and said, ‘I can buy this at a gas station,’” Yockey said. Sure enough, the student pulled up pictures of colorfully packaged canisters of nitrous oxide, with goofy brand names such as “Galaxy Gas” or “Exotic Whip.” 

These emerging brands are exploiting a regulatory loophole, the researchers said. Nitrous oxide is the whipping agent for whipped cream, so companies use that purpose as a cover to sell the product for recreational use. 

“Flavored and scented versions, there’s no legitimate culinary purpose for that,” Hoopsick said. “It’s a gas—it doesn’t flavor the whipped cream. But it gives a scent or flavor to that gas for people using it as an inhalant.” 

In the U.S., misuse of the inhalant has steadily risen since 2010. From 2023 to 2024, the number of intentional nitrous oxide exposure reports increased by 58 percent, Yockey wrote in a letter to the Journal of Medicine, Surgery and Public Health. More than 13 million people in the U.S. report using the inhalant in their lifetime.  

A separate analysis showed emergency medical visits for nitrous oxide misuse in Michigan jumped by four to five times from 2019 to 2023. 

We don’t want to wait until we’re at the top of the mountain, which is what we did with opioids.

Rachel Hoopsick

Assistant Professor of Health and Kinesiology

As of now, due to the culinary purpose of these products, the sale of nitrous oxide is still largely unregulated. Four states—Alabama, California, Michigan and Louisiana—have banned its recreational use as of July 2025. Others, such as Arizona and Connecticut, have banned the sale of the substance to minors; New York banned the sale of whipped cream chargers to anyone under 21 years of age.  

Earlier this year, the Food and Drug Administration advised consumers to avoid inhaling nitrous oxide “from any size canisters, tanks, or chargers,” naming more than a dozen brands.  

Still, in most states, users can pick from collections of brightly colored whipped cream chargers or dispensers at local smoke shops, or have canisters of nitrous delivered to their door from online shopping platforms. 

“Since last summer, it’s taken off,” Yockey said. 

A familiar playbook

The marketing “playbook” for nitrous oxide bears eerily similarity to the tobacco industry, Hoopsick said, in both appeal and accessibility. Sellers minimize health risks while dressing up the products in flashier exteriors, targeted at young people.

Tobacco companies were pressured by federal regulators to end practices that targeted young buyers, such as flavored cigarettes and cartoon brand mascots. 

A canister of “original flavor” Galaxy Gas. (Credit: Galaxy Gas)

“We know nitrous oxide has neurological effects,” Hoopsick said. “But sellers rarely, if ever, provide health warnings. The public largely views it as a harmless party drug.”

Unlike the usual “party drug,” however, nitrous oxide risks both instant brain damage and death. The brief “high” temporarily paralyzes users, and can lead to hypoxia, or deprivation of oxygen to the body. Nitrous oxide inactivates vitamin B12, which can lead to a host of other health problems, including nerve damage. 

Many deaths arise from the drug’s paralytic effect: the researchers were recently contacted by a mother whose college-age child died from drowning in a hot tub after inhaling nitrous oxide.

In the researchers’ view, the best path to stem nitrous oxide misuse is by making it harder to get, by raising the age requirements for purchase or limiting where the substance can be purchased.  

“From a public health perspective, now is a critical window of time to intervene,” Hoopsick said. “We don’t want to wait until we’re at the top of the mountain, which is what we did with opioids.”

Editor’s note:

To reach Rachel Hoopsick, email hoopsick@illinois.edu.
To reach Andrew Yockey, email rayocke1@olemiss.edu

The paper “U.S. nitrous oxide mortality” is available online.

DOI: 10.1001/jamanetworkopen.2025.22164
 

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Illinois researchers aim to develop more realistic hearing tests to improve clinical outcomes



Sadie Braun, left, is working to develop more accurate and meaningful hearing assessments (Photo by Brian Stauffer)

Imagine sitting in a busy café, struggling to follow a conversation as voices and background clatter blend together. For many people with hearing loss, this is a daily challenge—yet traditional hearing tests, conducted in silent rooms with isolated tones, fail to reflect these real-world difficulties. At the University of Illinois, a team of researchers is working to bridge that gap by developing more accurate and meaningful hearing assessments that simulate everyday listening environments. 

Sadie Braun, an audiologist and clinical assistant professor in the Department of Speech and Hearing Science in the College of Applied Health Sciences, is the team’s primary investigator and recently received a $30,000 pilot grant from the Center for Health, Aging, and Disability. She is working with Dan Fogerty, an SHS associate professor, on a project titled “Creation of Speech-in-Noise Profiles for Clinical Fitting of Hearing Technologies.” 
 
The project has two goals, the first being to analyze and better understand speech-in-noise testing results from clinical environments. 

“Instead of simply pressing a button when you hear a tone, we’re trying to get more out of tests that already exist which mirror real-world scenarios,” Braun said. “For example, it is fairly common now to play full sentences while background voices are talking at the same time—more like what someone might hear at a party or in a restaurant. We want to use these results to help understand the nuances in what causes understanding-in-noise difficulties on an individual basis.” 

The second goal of the project goes a step further: not just measuring how many mistakes a person makes during a hearing test, but understanding what kind of mistakes—and why they happen. 

“Right now, clinical hearing tests can tell you that someone misunderstood a sentence, but not how they misunderstood it,” Fogerty said. “Our approach focuses on the types of errors people make and the conditions under which those errors occur.” 

By analyzing these mistakes—called error profiles—the team hopes to gain new insights into what’s actually causing the difficulty. For example, one person might confuse similar sounds, like saying “cat” instead of “cats,” which could suggest a problem with sound clarity. Another person might only repeat the second half of a sentence, pointing to a possible cognitive issue like memory or processing speed. 

“We’re identifying patterns across different types of errors,” Braun said. “Then we compare those patterns with results from standard hearing tests to see if there are connections. That could help us predict which patients need which kinds of interventions.” 
 
Data collection will begin in the fall and participants will come from patients who come to the Audiology & Speech-Language Pathology Clinic and have consented to their audio recordings being used for this study. Braun said the tests focus more on adults, primarily those in their 50s and upward. 
 
With those error profiles, the team hopes to use those to improve hearing aid fittings and outcomes for patient satisfaction.  
 
“Different types of errors can have different real-life consequences,” Fogerty said. “Identifying the reasons why someone misunderstands speech will help the clinician identify recommendations to address those specific difficulties.” 

With support from CHAD, the pilot grant will allow Braun and Fogerty to gather foundational data, refine their testing protocols and begin developing detailed error profiles. Their ultimate goal is to translate this information into better hearing aid fittings, more accurate diagnoses and improved quality of life for patients. 

Looking ahead, the team plans to apply for additional funding to expand the project and validate their findings across broader patient populations. 

Braun emphasized the strength of the partnership at the core of this work. 

“This is a true collaboration between research and clinical practice,” she said. “Dr. Fogerty brings deep expertise in auditory research, while I bring the day-to-day clinical experience. Together, we’re approaching the same problem from different angles—and that’s what gives this project real potential to move the field forward.” 

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Putting people first: Chez Veterans Center sees success with new student-centered model



The Chez Veterans Center showed an increase in military-connected student engagement in the first year after implementing a comprehensive case management model.

The Chez Veterans Center has refocused on more individualized care

The number of unique students Chez served increased by 25.89%, meaning that the center had expanded its reach to more students while focusing on more targeted, individualized care. Andy Bender, director of operations and services at Chez, said that the focus of this initiative was putting the person back into what they do.

“What do we need to do in order to connect with the students on a human level and show them that we care and we really are interested in their success?” Bender said.

The initiative was spearheaded by Ingrid Wheeler, Chez’s assistant director for behavioral health programs, who took the concept of the new model and made it into a practical application. Wheeler said that the shift began with questions like the one above, and evolved over time through the pandemic and as the Veteran population changed. 

Her background in social work and case management helped her recognize that “a more individualized plan has to be in place to really support the ever-changing needs,” she said. “It’s about seeing it through a different lens that maybe we wouldn’t have if we weren’t seeing them as an individual.”

Cheryl Hanley-Maxwell, dean of College of Applied Health Sciences, was also part of conversations from the beginning, said Bender. She has been supportive of Chez’s mission shift and provided resources and knowledge about transition. Additionally, the Chez team said that student feedback, through their conversations with staff, was another part of shaping the new model.

Bender said that a September 2023 visit from Samuel Skinner, an alum and former White House chief of staff, had prompted the team to look more deeply into how Chez was caring for students. Previous to this shift, Bender said the way things were run wasn’t wrong, but that this mission change is a new approach to making a more powerful impact.

“A lot of our things were based on transactional services,” Bender said. “It was reliant on the student identifying that they have a problem and identifying a source for relief of that challenge. Often what would happen is the student would come in, they’d get the help, and then we’d never see the student again.”

Chez still provides those transactional services, such as assistance with Veteran benefits, resume writing and counseling, but now with an emphasis on continuing to check in with students. Chez documented 1,287 case management encounters this past year, ranging from quick check-ins to intensive support sessions.

Another aspect of the mission change was assessing what might be barriers for students and providing them with resources before they run into those barriers.

“Now we’re reaching out to students individually several times throughout the semester to really pull them in and have those conversations of ‘What’s brought you to campus? What are your goals?’” Wheeler said. “We can connect them to different resources, whether it be in the center or on campus, versus ‘Oh, you came to orientation—here’s a couple of pamphlets with everything on campus. Good luck!’”

What do we need to do in order to connect with the students on a human level and show them that we care and we really are interested in their success?

Andy Bender

Chez Veterans Center director of operations and services

She also said that Chez has been making sure that its own staff is equipped to answer the main areas that many students have questions about, such as resume review, so that students aren’t bounced around as much.

John Goeken is an electrical engineering undergraduate student and a former Marine and combat Veteran. Goeken’s first interaction with the Chez Veterans Center was through the Warrior’s Scholar Project, a “boot camp” started in 2022 for military-connected students to reacquaint themselves with the classroom environment.

“The hospitality that they had for us for that program for each student—they were willing to go out of their way and make sure we were accommodated,” Goeken said. “It was just above and beyond the reception you get as a Veteran anywhere else.”

Goeken recalled the first time that he spoke to Wheeler—he said he was just blowing off steam about difficulties adjusting during his first semester, including figuring out childcare.

“I’m just venting all this stuff, and she’s taking all these mental notes and literally follows up with me on an email that day an hour or two later with a list of resources for me to investigate,” Goeken said. “That was huge. I still have the list, too.”

Goeken said that he didn’t realize how much stress can compound, especially with the loss of structure and support that came with being in the military. 

“But Chez helps fill that gap with knowledge, hospitality and resources,” Goeken said. “It hasn’t been any grand gesture, but it’s been all these little incremental things.”

Another student-Veteran, Jacob Means, is a social work student and a former Chez resident advisor. He said the biggest service Chez has done was connect him with the community.

“The biggest thing for me was the people,” Means said. “It’s hard to connect with people in class. With Chez, you’re immediately ingrained in this really welcoming community of people that are very excited to have you there and that understand you, which is super hard in college.”

Means also said that a benefit of living right above the CVC was the close access to all of Chez’s resources.

“It takes people like me, who were scared and alone and didn’t know what to do, and it empowers them and it gives them all this ability to feel able to say, OK, I can leave this housing and understand what’s going on now,’” Means said.

With the new model, the Chez team said its focus is to improve and develop what it is doing, which often means taking into account military-connected student feedback.

Goeken suggested more resources with specifics to different colleges, as well as Chez taking a more proactive role in encouraging Veterans to access the benefits available to them.

“There are so many resources out there, but Veterans like myself often don’t know what’s available, or how to stay informed,” Goeken said. “If Chez could expand its outreach or offer low-pressure education around available benefits, through peer support, onboarding, or regular updates, I think it could make a real and lasting impact.”

Even with the increase in quantitative data of this year’s engagement, Bender said success isn’t defined by numbers.

“I want the success to be more about how the student defines their success,” Bender said. “Again, every student is different and everyone has a different idea. If we’re going to put humans back at the center of all we do, then the numbers can’t be the most important—it has to be the feedback they give us on their success and if they feel like they’ve achieved their own goals.”

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