Can Weight Loss Drugs Also Treat Addiction?

A new study provides more evidence that glucagon-like peptide 1 receptor agonists (GLP-1 RAs) used to treat diabetes and obesity could be repurposed for opioid use disorder (OUD) and alcohol use disorder (AUD).

Researchers found that patients with OUD or AUD who were taking semaglutide (Ozempic, Novo Nordisk) or similar medications for diabetes or weight-related conditions had a 40% lower rate of opioid overdose and a 50% lower rate of alcohol intoxication than their peers with OUD or AUD who were not taking these medications.

Their real-world study of more than 1 million adults with a history of OUD or AUD provide “foundational” estimates of the association between glucose-dependent insulinotropic polypeptide (GIP)/GLP-1 RA prescriptions and opioid overdose/alcohol intoxication “and introduce the idea that GLP-1 RA and other related drugs should be investigated as a novel pharmacotherapy treatment option for individuals with OUD or AUD,” the investigators led by Fares Qeadan, PhD, Parkinson School of Health Sciences and Public Health, Loyola University Chicago, Maywood, Illinois, wrote.

The study was published online on October 17 in the journal Addiction.

Protective Effect?

As previously reported by Medscape Medical News, earlier studies have pointed to a link between weight loss drugs and reduced overdose risk in people with OUD and decreased alcohol intake in people with AUD.

Until now, most studies on GLP-1 RAs and GIP agonists like tirzepatide (Mounjaro) to treat substance use disorders consisted of animal studies and small-scale clinical trials, investigators noted.

This new retrospective cohort study analyzed de-identified electronic health record data from the Oracle Health Real-World Data.

Participants, all aged 18 years or older, included 503,747 patients with a history of OUD, of whom 8103 had a GLP-1 RA or GIP prescription, and 817,309 patients with a history of AUD, of whom 5621 had a GLP-1 RA or GIP prescription.

Patients with OUD who were prescribed GLP-1 RAs had a 40% lower rate of opioid overdose than those without such prescriptions (adjusted incidence rate ratio [aIRR], 0.60; 95% CI, 0.43-0.83), the study team found.

In addition, patients with AUD and a GLP-1 RA prescription exhibited a 50% lower rate of alcohol intoxication (aIRR, 0.50; 95% CI, 0.40-0.63).

The protective effect of GLP-1 RA on opioid overdose and alcohol intoxication was maintained across patients with comorbid conditions, such as type 2 diabetes and obesity.

“Future research should focus on prospective clinical trials to validate these findings, explore the underlying mechanisms, and determine the long-term efficacy and safety of GIP/GLP-1 RA medications in diverse populations,” Qeadan and colleagues concluded.

“Additionally, the study highlights the importance of interdisciplinary research in understanding the neurobiological links between metabolic disorders and problematic substance use, potentially leading to more effective treatment strategies within healthcare systems,” they added.

Questions Remain

In a statement from the UK nonprofit Science Media Centre, Matt Field, DPhil, professor of psychology, The University of Sheffield, Sheffield, England, noted that the findings “add to those from other studies, particularly animal research, which suggest that this and similar drugs might one day be prescribed to help people with addiction.”

However, “a note of caution is that the outcomes are very extreme instances of substance intoxication,” added Field, who wasn’t involved in the study.

“Those outcomes are very different from the outcomes used when researchers test new treatments for addiction, in which case we might look at whether the treatment helps people to stop taking the substance altogether (complete abstinence), or if it helps people to reduce the amount of substance they consume, or how often they consume it. Those things could not be measured in this study,” he continued.

“This leaves open the possibility that while Ozempic may — for reasons currently unknown — prevent people from taking so much alcohol or heroin that they overdose and end up in hospital, it may not actually help them to reduce their substance use, or to abstain altogether,” Field said.

The study had no specific funding. The study authors and Field declared no relevant conflicts of interest.