Top 10 Emerging Uses of GLP-1 Compounds Beyond Diabetes and Obesity
The scale was only ever the beginning of the story. Across kidneys, livers, hearts, joints and even drinking habits, researchers are mapping a second life for GLP-1 compounds, one that has almost nothing to do with a number on a bathroom floor.
GLP-1 receptor agonists were built to lower blood sugar. Then they became weight loss drugs almost by accident, because patients who took them for diabetes kept mentioning that their appetite had changed and the pounds kept coming off. Now a third chapter is opening, and it looks nothing like the first two.
Over the past two years, dedicated outcome trials have started reporting results in patients with kidney disease, heart failure, liver scarring, sleep apnea, joint pain and alcohol use disorder. Some of these findings led directly to new FDA approvals. Others are still early, built on smaller trials or observational data, and worth watching rather than acting on. Below are ten of the most significant directions this research is heading, with the actual numbers behind each one.
Heart Protection That Does Not Depend on Weight Loss
The SELECT trial enrolled more than 17,000 adults with cardiovascular disease and overweight or obesity, none of whom had diabetes, and followed them for a mean of 34 months. Semaglutide cut the combined risk of cardiovascular death, heart attack and stroke by 20 percent compared with placebo, and all cause mortality dropped by 19 percent. What surprised cardiologists was the timing: the curves separated within months, long before most participants had lost enough weight to explain a cardiovascular benefit on its own, which points to a more direct effect on inflammation and vascular function.
MACE risk reduction vs placebo · SELECT trial, NEJM
Slowing Chronic Kidney Disease
The FLOW trial followed 3,533 people with type 2 diabetes and chronic kidney disease for a median of 3.4 years - the first dedicated kidney outcomes trial ever run on a GLP-1 medication. Semaglutide reduced the risk of major kidney events by 24 percent, cardiovascular events by 18 percent, and death from any cause by 20 percent. The benefit held steady whether patients had mild, moderate or severe kidney disease, and whether or not they were already on an SGLT2 inhibitor. The FDA approved this use in January 2025.
Risk reductions across endpoints vs placebo · FLOW trial, NEJM 2024
Easing Heart Failure With Preserved Ejection Fraction
Heart failure with preserved ejection fraction, or HFpEF, is notoriously hard to treat, and roughly 60 percent of patients with it also carry obesity. In the STEP HFpEF program, semaglutide improved symptom scores on the Kansas City Cardiomyopathy Questionnaire by 16.6 points against 8.7 for placebo, increased six minute walk distance, and cut C reactive protein by 43.5 percent. Patients also needed less loop diuretic medication. This is not yet a formal FDA approved indication, but the data has already shifted how cardiologists think about obesity related heart failure.
KCCQ symptom score improvement · STEP HFpEF trials, Circulation and Nature Medicine
Reversing Early Stage Liver Scarring
Metabolic dysfunction associated steatohepatitis, or MASH, used to be a disease with almost no pharmaceutical options. In the phase 3 ESSENCE trial, 800 patients with biopsy confirmed MASH and moderate to advanced fibrosis were followed for 72 weeks. Among those on semaglutide, 62.9 percent achieved resolution of steatohepatitis without their fibrosis getting worse, compared with 34.3 percent on placebo. A third of treated patients achieved both steatohepatitis resolution and measurable fibrosis improvement at the same time. This became the first GLP-1 medication approved specifically for liver disease with fibrosis, excluding cirrhosis.
MASH resolution without worsening fibrosis at week 72 · ESSENCE trial, NEJM 2025
Treating Obstructive Sleep Apnea
Obstructive sleep apnea affects an estimated 936 million adults worldwide, and until the end of 2024 there was no approved drug for it at all. That changed when tirzepatide became the first medication ever approved specifically for moderate to severe OSA, based on the SURMOUNT OSA trials. Over 52 weeks, tirzepatide reduced the apnea hypopnea index by 25 to 29 events per hour compared with 5 events per hour on placebo, and roughly 43 to 51 percent of participants saw their sleep apnea resolve entirely.
- Tirzepatide
- Placebo
Apnea hypopnea index over 52 weeks · SURMOUNT OSA trials, NEJM 2024
Reducing Pain From Knee Osteoarthritis
The STEP 9 trial tested semaglutide in adults with obesity and moderate to severe knee osteoarthritis pain over 68 weeks. Beyond the expected weight loss, patients on semaglutide showed a significantly larger improvement in physical function on the SF-36 survey, gaining 12.0 points compared with 6.5 points on placebo. Knee pain scores on the WOMAC scale dropped more sharply as well. Newer data on cartilage thickness and joint biomechanics is starting to suggest the benefit is not purely a byproduct of carrying less weight, though that research is still early.
Physical function improvement · STEP 9 trial, NEJM 2024
Cutting Heavy Drinking in Alcohol Use Disorder
A randomized, double blind, placebo controlled trial published in The Lancet in May 2026 followed 108 people with obesity and alcohol use disorder for 26 weeks. Those on weekly semaglutide cut their heavy drinking days by 41.1 percent from baseline, compared with a 26.4 percent reduction in the placebo group, alongside cognitive behavioral therapy in both arms. Earlier, smaller trials out of USC and the NIH found similar reductions in craving and consumption, and the NIH has called the early signal encouraging while noting that larger confirmatory trials are still needed.
Reduction in heavy drinking days from baseline · Lancet, May 2026
Protecting the Brain From Inflammation
GLP-1 receptors sit throughout the hypothalamus and brainstem, well beyond the gut, and researchers have been probing what that means for cognition. The working theory is that these compounds cross into the central nervous system and dampen neuroinflammation while improving blood flow, both of which are implicated in cognitive decline. Trials specifically studying Alzheimer's disease and other forms of dementia are still in progress, and none have reported the kind of definitive outcome data seen in the cardiovascular or kidney trials. It remains one of the most closely watched frontiers in the field precisely because the mechanism is plausible but the proof is not yet complete.
Supporting Hormonal Balance in Midlife
Beyond insulin, GLP-1 activity appears to touch other hormonal systems tied to energy regulation and metabolic stability. Clinicians working in midlife and hormone focused practices have reported improvements in markers connected to insulin resistance and lipid metabolism in patients using these compounds, changes that may indirectly support more stable hormone patterns and fewer of the energy dips and cravings associated with metabolic fluctuation. This area is still built mostly on clinical observation and smaller studies rather than large randomized trials, so it belongs firmly in the watch and wait category.
Quieting Cravings Beyond Alcohol
The same reward pathway effects behind the alcohol findings above appear to extend to other substances. In subgroup data from the USC led trial on alcohol use disorder, participants who also smoked cigarettes showed a greater drop in cigarettes per day on semaglutide than on placebo. Researchers at the National Institute on Drug Abuse have described this as a genuinely new direction for addiction pharmacology, one that may eventually extend to opioids and other substances, though that work is still confined to early trials and preclinical models.
Summary
| Emerging Use | Key Trial | Headline Finding | Status |
|---|---|---|---|
| Cardiovascular protection | SELECT | 20% reduction in major cardiac events | Approved |
| Chronic kidney disease | FLOW | 24% reduction in major kidney events | Approved |
| Heart failure, HFpEF | STEP HFpEF | 16.6 point KCCQ symptom improvement | Emerging |
| Liver fibrosis, MASH | ESSENCE | 62.9% steatohepatitis resolution | Approved |
| Obstructive sleep apnea | SURMOUNT OSA | Up to 51% disease resolution | Approved |
| Knee osteoarthritis | STEP 9 | 12.0 point SF-36 function gain | Emerging |
| Alcohol use disorder | Lancet 2026 | 41.1% fewer heavy drinking days | Emerging |
| Cognitive protection | Ongoing trials | Reduced neuroinflammation, early signal | Early stage |
| Hormonal balance | Observational data | Improved insulin and lipid markers | Early stage |
| Broader craving reduction | Subgroup analyses | Reduced cigarettes per day in smokers | Early stage |
Frequently Asked Questions
Are GLP-1 medications approved for anything besides diabetes and obesity right now?
Yes. As of mid 2026, semaglutide and tirzepatide have FDA approved indications covering type 2 diabetes, obesity, cardiovascular risk reduction, chronic kidney disease, liver fibrosis from MASH, and obstructive sleep apnea. That last group of approvals all landed between December 2024 and August 2025.
Do these benefits happen because of weight loss, or something else?
Both, depending on the condition. In the SELECT cardiovascular trial, benefits appeared before most weight loss had occurred, suggesting a direct effect on inflammation and blood vessels. In knee osteoarthritis and sleep apnea, weight loss plays a much larger role, though researchers are finding evidence of independent effects there too.
Is the alcohol use disorder research strong enough to act on yet?
The May 2026 Lancet trial is the most rigorous data so far, but it involved 108 participants over 26 weeks, which is still a modest sample. Researchers including those at NIH describe it as encouraging rather than conclusive, and larger phase 3 trials are underway, including one specifically in veterans.
What is the difference between semaglutide and tirzepatide in this research?
Semaglutide targets the GLP-1 receptor alone, while tirzepatide targets both GLP-1 and GIP receptors. Tirzepatide holds the specific FDA approval for sleep apnea, while semaglutide holds the approvals for cardiovascular risk, kidney disease and MASH. Head to head data generally shows tirzepatide producing somewhat greater weight loss, though both show meaningful benefits across these emerging uses.
Where can I go deeper on any one topic?
Each finding above is drawn from a named clinical trial, so searching the trial name directly - FLOW, SELECT, ESSENCE, STEP 9 or SURMOUNT OSA - is the fastest way to read the full published results in the New England Journal of Medicine, Circulation, or Nature Medicine.
This article is for informational purposes only and summarizes published clinical trial data. It is not medical advice. Several of the uses described above are not FDA approved and reflect ongoing or early stage research. Anyone considering a GLP-1 medication for any condition should talk with a qualified healthcare provider.