‹ Dragoman · Edition 24
Translated from Korean · 10 June 2026
translated from Korean

The “Miracle Drug” Spreading Among Teenagers

Obesity drugs created to treat disease are being prescribed with alarming ease for cosmetic weight loss, even to adolescents, while regulation and data lag far behind the risks.

10대에게도 번진 다이어트 약, 부작용은 짐작도 못해
SisaIN · 전다현 기자 · 9 June 2026 · read the original in Korean →

Even a map app could not locate it precisely. After passing through the subway turnstiles, I wandered for a long while through “basement level two,” but the clinic was nowhere to be seen. “Which way should I go to get to OO Clinic?” I asked at a nearby shop. The answer came back as if the question were familiar: “Go straight toward Cheongnyangni.” In the middle of a subway transfer corridor thronged with hurried passersby, the exterior was so unobtrusive that unless one looked closely, it was hard to tell it was a clinic at all. Inside, there was no person at the reception desk, only a tablet PC. Under purpose of visit, the only choices were things like “diet injection,” “hair-loss medication,” “urology,” and “acne medication.” By seven in the evening, the clinic had quickly filled with thin, young women.

After selecting “diet injection” and waiting, I was soon called by a nurse. The moment I sat down in the consulting room, the doctor asked bluntly, “Mounjaro or Wegovy?” When I answered “Mounjaro,” he gave a mechanical explanation: “The dosage is 2.5 mg, right? Read this notice, and this is how you give yourself the shot.” Mounjaro and Wegovy are injected by the person to whom they are prescribed. The doctor did not ask my weight or body mass index, BMI. He did not ask about past medical history or experience of side effects, and there was not even a perfunctory examination. In barely more than twenty seconds, it was possible to obtain a prescription for Mounjaro with astonishing ease.

The prescription fee is a flat 10,000 won; at the 2.5 mg dose, Wegovy costs 218,000 won and Mounjaro 290,000 won, a perfectly fixed-price system. Around Jongno in Seoul, known as a “Mounjaro mecca,” pharmacies and clinics like this lined the streets. On social media, information circulated about clinics that readily prescribed Mounjaro and Wegovy. These drugs, advertised with provocative slogans promising a loss of ten kilograms in three months, have begun to be used as cosmetic diet drugs for “getting even thinner,” their original purpose as treatments for diabetes and obesity forgotten. A pharmacist at Pharmacy A in Jongno District said, “All the clinics around here prescribe Mounjaro. These days people of all ages are taking Mounjaro away with them. Most are young women, but the age range has widened, from high school students to men in their sixties.” A pharmacist at Pharmacy B explained, “Because of the price, really young kids are rare, but there are quite a few high school students.”

Illegal distribution has also increased. On May 13, the Ministry of Food and Drug Safety announced the results of an inspection into the distribution of GLP-1 obesity treatments, including Mounjaro and Wegovy, which suppress appetite. After inspecting 632 hospitals, clinics, and pharmacies nationwide, the ministry found six sites where doctors had used the drugs themselves without preparing medical records, or where drugs had been sold without prescriptions.

The “Miracle Drug” Spreading Among Teenagers청소년에게 퍼진 ‘기적의 약’

Originally, Mounjaro and Wegovy were intended for obese patients with a body mass index of 30 or above, or for overweight patients with a BMI of 27 or above and below 30 who also have weight-related comorbidities such as hypertension. In reality, however, prescriptions are being written “for anyone” who “wants them.” Because prescriptions for obesity treatments can be obtained so easily, whether by skirting the law or violating it outright, even self-mocking remarks now appear in online communities: “Soon, if you’re not thin, you’ll be branded as someone without money.”

The miracle drug has spread even to teenagers. A pharmacist at Pharmacy C in Jongno District explained why the pharmacy does not carry Mounjaro, Wegovy, and similar drugs: “I simply cannot stand seeing thin people come in and take those drugs. And then kids come in for them too. So we just decided not to stock them.” This has been known for some time. At the National Assembly Health and Welfare Committee’s parliamentary audit last October, it was pointed out that prescriptions for Mounjaro for teenagers were increasing. So Byung-hoon, a lawmaker from the Democratic Party of Korea, said, “Under Ministry of Food and Drug Safety guidelines, the obesity treatment Mounjaro may be prescribed to people aged 18 and older, yet it is also being prescribed to teenagers who have not turned 18. The ministry must take this seriously and manage it.”

How is this possible? Because of “off-label” use, the use of a drug for purposes other than those for which it has been approved. In principle, prescribing a drug outside its indications, meaning the diseases or symptoms for which a therapeutic effect is expected from a specific medicine, requires approval from the Health Insurance Review and Assessment Service. But medical insiders explain that because there is no separate penalty provision even when drugs are prescribed beyond the scope of approval or notification, such prescriptions are easily issued. In other words, although Ministry of Food and Drug Safety guidelines say Mounjaro should be prescribed only to those aged 18 and older, the rule has no coercive force. One doctor tipped me off: “A considerable number of teenagers, including aspiring idols, are getting prescriptions for Mounjaro and Wegovy regardless of disease.”

According to Drug Utilization Review, or DUR, data submitted by the Health Insurance Review and Assessment Service to the office of Kim Sun-min, a Rebuilding Korea Party lawmaker on the National Assembly Health and Welfare Committee, in April 2026, prescription checks in March of this year recorded 41 cases of Saxenda, 2,213 cases of Wegovy, and 1,888 cases of Mounjaro among teenagers. Cases also emerged in which Wegovy, Mounjaro, Saxenda, and similar drugs were checked for prescriptions to children under the age of ten. In the cases of Saxenda and Wegovy, the Ministry of Food and Drug Safety has approved expanded indications for adolescent patients aged 12 and older, but Mounjaro has not yet been approved in Korea for adolescent use.

The problem of side effects is also serious. Lee Dong-geun, secretary-general of the Association of Pharmacists for a Healthy Society, explained, “The most severe side effect is pancreatitis, and recently in the United States eating disorders have become an issue. Some users experience eating disorders, but all of these reports concern patients who fit the indications. We do not know the side effects in patients who receive the drugs outside the indications. In the past, when prescriptions of the so-called butterfly pills, narcotic appetite suppressants, became a social problem because of adolescent use, the Ministry of Food and Drug Safety drew up prescription guidelines and showed a will to regulate them, which helped mitigate the risk. In the same way, related regulations must be hurried along.”

The Ministry of Food and Drug Safety plans to designate GLP-1 obesity treatments such as Wegovy and Mounjaro as drugs at risk of misuse and abuse. Once designated as such, drug containers, packaging, and accompanying documents must carry the phrase “drug at risk of misuse and abuse.” But designation as a drug at risk of misuse and abuse does not make off-label prescribing impossible. As noted above, even if the drugs are prescribed to teenagers, there is no way to regulate it.

Eli Lilly Korea, the domestic supplier of Mounjaro, also says prescriptions should be made only within the scope of approval. An Eli Lilly Korea official explained, “Because studies involving adolescents are still under way, Mounjaro should be used only for adult patients with obesity, patients with diabetes, and patients with obstructive sleep apnea. We, too, have no way to regulate off-label prescriptions by medical personnel.”

Even When They Are Misused, There Are No Statistics오남용해도, 통계는 없다

At the Korean Society for the Study of Obesity as well, off-label prescribing to adolescents has emerged as a central issue. Lee Jae-hyeok, secretary-general of the society and professor of endocrinology at Hanyang University Myongji Hospital, lamented, “If a problem arises when the drugs are administered to underweight adolescents who are not candidates for obesity treatment, medical personnel must bear unlimited responsibility. The problem is that the obesity treatment market does not fall within the scope of regulation. The society is also monitoring indiscriminate prescribing, but it is not easy to prevent use through internal self-correction alone.”

The Korean Society for the Study of Obesity also regards as serious the fact that it cannot identify cases of side effects caused by off-label prescribing. Secretary-General Lee Jae-hyeok said, “Reports of side-effect cases are being accumulated only for patients who fall under the indications. We are in a situation where we cannot know how many more side effects will occur among patients outside the indications, or what kinds of side effects will occur.”

In fact, because Mounjaro, Wegovy, and similar products are non-reimbursed items, there are no precise national statistics on whom they have been prescribed to, or in what quantities. The data most commonly used as a proxy are the Health Insurance Review and Assessment Service’s Drug Utilization Review, or DUR, records, but even these do not include every prescription. Lee Dong-geun, quoted earlier, pointed out, “Because DUR data are collected on a health-insurance basis, medical institutions may omit reports on non-reimbursed items.” An official at the Health Insurance Review and Assessment Service likewise explained, “DUR is a system that checks contraindications before prescription, such as concomitant use, age, and pregnancy. It is not data recording claims for non-reimbursed drugs. Non-reimbursed drugs can be prescribed without undergoing DUR checks.”

In the end, voices are calling urgently for systematic guidelines on prescribing these drugs to adolescents. Secretary-General Lee Jae-hyeok said, “There needs to be a designated hospital responsible for pediatric and adolescent obesity, or a proper prescribing framework needs to be created from the initial launch of a drug. We are approaching this cautiously, because if we are not careful it could become difficult to prescribe for adolescents who truly need treatment.” Hong Yong-hee, a director of the Korean Society for the Study of Obesity and professor of pediatrics at Soonchunhyang University Bucheon Hospital, also pointed out, “With children whose bodies are still developing, we have to approach far more carefully. The system must be refined so that the drugs reach only children who truly need them, and the medical community itself also needs self-corrective efforts.”

Yoo Ji-hye, the Women’s Party candidate for Seoul mayor, has said she will regulate advertisements for obesity treatments that emphasize diet effects for cosmetic purposes. Yoo explained, “After looking directly at pharmacy streets and the medical advertising environment, I found advertisements for obesity treatments very easily, and there were even clinics being called ‘obesity-treatment meccas.’ The reality in which drugs for extreme weight loss are prescribed and consumed far too easily is a serious problem. In particular, because they can threaten even the health of growing adolescents, I believe both the advertising environment and the medical system need to be improved.”

Obesity treatments born to treat disease are spreading among teenagers as miracle drugs that make already thin bodies thinner still. Before a “treatment” becomes a “disease” that ruins children’s bodies, it is time to put countermeasures in place.

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시사IN SisaIN · read in Korean