GLP-1 drugs may fight addiction, and reduce alcohol consumption
This week's research reveals GLP-1 drugs doing double duty—tackling both obesity and unexpected conditions like addiction and fibromyalgia—while head-to-head comparisons show which treatments work best.
🧠 GLP-1 drugs may help treat addiction beyond weight loss
41 studies (35 preclinical, 6 clinical) found GLP-1 receptor agonists like semaglutide and liraglutide reduced substance intake and relapse-like behaviors across alcohol, nicotine, cocaine, and opioids
The drugs appear to work by activating GLP-1 receptors in brain reward circuits including the nucleus accumbens and ventral tegmental area—the same regions involved in addiction
Clinical studies showed particular promise for alcohol use disorder, with GLP-1 drugs reducing both alcohol consumption and cravings in several trials, though sample sizes were small
Why it matters: GLP-1 drugs may represent a novel approach to addiction treatment by targeting the same brain pathways that control both food reward and substance abuse—potentially helping millions struggling with addiction.
Key Findings
⚖️ Sleeve gastrectomy beats semaglutide for weight loss
71 adults with obesity were assigned to either sleeve gastrectomy surgery or weekly semaglutide injections for 24 weeks
At 12 months, surgery achieved 28.6% total weight loss compared to 11.3% with semaglutide
Among 25 patients who stopped semaglutide after 6 months, 32% regained their baseline weight or higher by 12 months
💪 GLP-1 drugs linked to reduced fibromyalgia symptoms
48,025 fibromyalgia patients using GLP-1 drugs were compared to 48,025 matched patients not using them over 5 years
GLP-1 users had 35% lower odds of opioid prescriptions, 21% lower odds of pain diagnostic codes, and 32% lower odds of fatigue diagnostic codes
The association held even after accounting for diabetes, obesity, and other health conditions
🫀 SGLT2 inhibitors may protect kidneys better than GLP-1 drugs
55,061 veterans with type 2 diabetes starting either SGLT2 inhibitors or GLP-1 drugs were followed for kidney and heart outcomes
SGLT2 inhibitor users had 19% lower risk of chronic kidney disease and 12% fewer acute kidney injury episodes over 5 years
However, GLP-1 drug users had 14% lower risk of major cardiac events (heart failure, heart attack, stroke)
🔥 Tirzepatide reduces diabetic eye complications
173,846 patients with diabetes (86,923 on tirzepatide, 86,923 matched controls) were followed for 12 months
Tirzepatide users had 30% lower risk of proliferative diabetic retinopathy, 38% lower risk of diabetic macular edema, and 52% fewer anti-VEGF eye injections
The drug also reduced risk of serious complications like vitreous hemorrhage (39% lower) and retinal detachment (63% lower)
🍺 Real-world data shows GLP-1 drugs reduce alcohol consumption
1,214 people prescribed GLP-1 drugs were compared to 1,063 matched individuals not taking them in a large healthcare system
Both groups reduced their weekly alcohol consumption, but GLP-1 users had a greater reduction (1.81 vs 1.38 drinks per week)
The effect was most pronounced in people with low-risk baseline alcohol use (92.8% of the GLP-1 group)
🦴 GLP-1 drugs may improve bone healing but increase wound complications
1,504 patients undergoing midfoot fusion surgery (752 on GLP-1 drugs, 752 controls) were followed for complications
GLP-1 users had 29% lower odds of bone nonunion at 1 year, suggesting better bone healing
However, they had 71% higher rates of wound complications at 90 days and more than double the rate of mechanical complications at 1 year
Implications
GLP-1 drugs are proving to be remarkably versatile medications, with benefits extending far beyond diabetes and weight loss to potentially include addiction treatment, chronic pain relief, and organ protection. However, the research also highlights important trade-offs—while these drugs show promise for many conditions, surgical options still provide superior weight loss, and different diabetes medications may be better for specific complications.
Studies in this issue
Primary sources used for this newsletter.
- Possible use of GLP-1 receptor drugs to treat substance use disordersmain storyFrontiers in pharmacology2026-01-19PMID 41552827
- Use of Glucagon-Like Peptide-1 Receptor Drugs and Alcohol Consumption in a Large Health Care Populationkey findingBiological psychiatry global open science2026-01-19PMID 41552778
- How SGLT2 inhibitors and GLP-1 receptor agonists compare in protecting the kidneys and heart based on risk of kidney failurekey findingJournal of the American Society of Nephrology : JASN2026-01-21PMID 41563358
- Effects of GLP-1 receptor drugs in people with fibromyalgia compared to similar patientskey findingRheumatology (Oxford, England)2026-01-24PMID 41578948
- Weight loss and metabolic changes after sleeve gastrectomy compared to semaglutide treatmentkey findingBMC medicine2026-01-22PMID 41572274
- Link Between GLP-1 Receptor Agonist Use and Results After Midfoot Joint Fusion Surgerykey findingThe Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons2026-01-21PMID 41565054
- Tirzepatide and Lower Risk of Diabetic Eye Disease and Related Problems in a U.S. Patient Groupkey findingOphthalmology2026-01-23PMID 41577258
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