Pediatric Obesity Specialists Struggle to Get GLP-1s

While adults, many of whom don’t meet the clinical definition of obesity, scramble to procure glucagon-like peptide 1 (GLP-1) agonists for weight loss, pediatric obesity specialists said their young patients who could benefit more over the long term often are unable to access the potentially life-altering medications.

The US Food and Drug Administration (FDA) approved two GLP-1 agonists — both marketed by Novo Nordisk — for use in adolescents aged ≥ 12 years: Wegovy (semaglutide) in December 2022 and Saxenda (liraglutide) in December 2020. Novo Nordisk and Eli Lilly — which makes the dual glucose-dependent insulinotropic polypetide/GLP-1 agonist tirzepatide (Zepbound) — are also investigating the drugs for obesity in children as young as age 6 years. The crushing demand for semaglutide in the last year — driving a thriving market in compounded versions and online prescriptions — has made it increasingly difficult to find pharmacies that can fill prescriptions, pediatricians told Medscape Medical News.

“It’s been more difficult to get people initiated now than it was a year ago,” said Brooke Sweeney, MD, medical director of weight management services at Children’s Mercy in Kansas City, Missouri. “Because of the supply issues, for the most part we’re not starting anyone new because I don’t have enough medication to keep my patients on it who are already on it,” she said.

Sarah Raatz, MD, a pediatrician at the University of Minnesota’s Center for Pediatric Obesity Medicine, said, “I actually haven’t really been prescribing many of these medications as of late.” Both liraglutide and semaglutide “are largely unavailable or quite hard to get a hold of,” Raatz told Medscape Medical News.

Susma Shanti Vaidya, MPH, MD, associate medical director of the IDEAL pediatric obesity clinic at Children’s National Hospital in Washington, DC, said that patients taking GLP-1 agonists in her practice have reduced their body mass index and have seen resolution of prediabetes, diabetes, and fatty liver disease. “I had one patient who had severe obstructive sleep apnea which resolved with semaglutide.”

But when they can’t find the medications, it can lead to a plateauing of weight loss and a reversal of hard-won victories, Vaidya said.

Insurance Denials Also Growing

In January 2023, the American Academy of Pediatrics urged aggressive treatment of childhood obesity, including using FDA-approved medications such as GLP-1 agonists combined with lifestyle and dietary modifications.

The US Preventive Services Task Force, however, has issued a draft proposal that recommends a variety of lifestyle and behavior modification interventions for children and adolescents but says the evidence does not yet support recommending bariatric surgery or medications.

Insurance coverage for children — even for FDA-approved indications and the age 12-and-over population — has become increasingly difficult, said the pediatric obesity specialists. Insurers are also creating hurdles that make getting coverage more difficult, they said.

Some insurers track an adolescent’s weight trajectory, “and if they’re not meeting a certain response threshold set by the insurance company, then they can pull coverage and then we have to try to advocate for why continued coverage might be beneficial and necessary,” Raatz said.

Insurers in the region around Children’s Mercy are erecting similar barriers, said Sweeney. Interim weight loss goals are challenging in pediatrics — given that adolescents are constantly changing and growing, she said.

Vaidya said she’s had success with commercial insurers but that the Washington, DC, and Maryland Medicaid programs have been stingier.

All the pediatricians said they expect greater restrictions in 2024.

Vaidya said some patients told her they had been notified that prior authorization will be required for new prescriptions for a GLP-1 agonist.

“We will just kind of be forced to see what happens when these medications are taken away from patients who have benefited from them,” Raatz said.

Some Parents Asking for GLP-1 Agonists

Pediatric obesity specialists said more parents are asking if a GLP-1 agonist might be appropriate for their children this year than in 2022.

Sweeney said parents ask for the medications when they feel they have exhausted all other options for their children. “These parents are not coming because they are concerned about the cosmetic effects of the weight,” she said. In most cases, children she sees have been struggling for years with extreme hunger and lack of satiety and may have prediabetes or diabetes. Many are being bullied in school because of their weight. They have only marginally been helped by interventions suggested by primary care or dieticians or other specialists, Sweeney said.

“Starting semaglutide really is life-changing for some of these patients,” Vaidya said. One patient said, “it just stopped the food chatter,” she added, noting that the adolescent no longer felt ruled by cravings.

In a recent poll by Morning Consult, 65% of parents of children with weight-related issues said they would be interested in GLP-1 agonists for their kids. A third of all parents said they would be interested in having their children use the drugs if they were available.

Lifelong Medication?

Parents — and adolescents — are generally counseled that obesity is a chronic disease and GLP-1 agonists are likely a lifelong treatment.

With the medications, “our first step is to get induction of weight loss and get your set point decreased enough that we can get you to a healthier weight for your body,” Sweeney said.

She tells patients and families, “I can’t tell you that you’re necessarily going to be on this medication at this dose for the rest of your life, but you will need treatment for life.”

Based on current knowledge, the risks for lifelong obesity outweigh the risk for the medications. Sweeney said she would like to see more data. “There absolutely is an evidence gap, and we need more information on the long-term effectiveness and safety.”

“When we start kids on this medication, I’m very clear that we are going to try to get to the lowest effective dose,” Vaidya said. She also emphasizes to parents that the medications must be used in conjunction with continued lifestyle modifications. She expressed hope that as clinicians gain more experience, and patients’ comorbidities resolve, perhaps it will be possible in some cases to take individuals “off for a period of time, with the understanding that they might have to go back on in a few months.”

“We’re weighing the pros and cons of being on a medication long term but we’re also weighing the pros and cons of weight-related health complications long term,” Raatz said.

Raatz also said clinicians have much to learn about the long-term safety of GLP-1 agonists in their pediatric patients.

She tells parents and families, “we expect that this is going to be a long-term medication, and this is going to be something that we’re going to continue to monitor.”

Sweeney reports that she is a speaker and unpaid consultant on Rhythm Pharmaceuticals’ Imcivree (setmelanotide) medication and that she consults for Eli Lilly. Raatz is a coprincipal investigator for a Novo Nordisk trial of semaglutide in young children and will be a co-PI for a similar trial for Eli Lilly’s tirzepatide but receives no consulting fees or honoraria. Vaidya reported no conflicts.

Alicia Ault is a Saint Petersburg, Florida-based freelance journalist whose work has appeared in publications including JAMA and Smithsonian.com. You can find her on X (formerly known as Twitter) @aliciaault.