Glucagon like Peptide 1 News and Research

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Genetic variants may help explain who loses more weight and who gets side effects on GLP-1 drugs

A large 23andMe-based GWAS found that common variants in GLP1R and GIPR help explain why some people lose more weight or experience more nausea and vomiting on GLP-1 drugs. The findings suggest genetics may eventually help predict who responds best to semaglutide or tirzepatide and who is more likely to develop side effects.

9 Apr 2026

Semaglutide for weight loss was linked to a sharp drop in alcohol use in this case report

A 2026 case report describes a 34-year-old man with obesity and alcohol use disorder whose semaglutide treatment for weight loss was associated with a marked drop in drinking over 10 months, with his AUDIT score falling from 27 to 7 and alcohol use dropping from about 15 drinks per week to half a beer per month. The authors frame this as a promising but preliminary finding that adds to growing evidence on GLP-1 drugs and alcohol use, while also stressing that this was a single case and that better AUD screening in family medicine remains important.

2 Apr 2026

How gut imbalance may drive obesity, diabetes, and heart disease

A new review argues that gut dysbiosis is closely linked to metabolic dysfunction through intertwined effects on inflammation, oxidative stress, gut barrier integrity, microbial metabolites, and epigenetic regulation. It also highlights microbiome-targeted strategies such as high-fiber diets, probiotics, prebiotics, postbiotics, exercise, and fecal microbiota transplantation as promising ways to support metabolic health.

30 Mar 2026

Experts propose trial to evaluate obesity medications for cancer prevention

In new research to be presented at this year's European Congress on Obesity (ECO2026) in Istanbul, Turkey (12-15 May), a global panel of 21 obesity and cancer experts suggest that to test the potential efficacy of the new generation of obesity drugs such as semaglutide and tirzepatide in preventing obesity-related cancer (ORC), a trial of the drugs for some 5,000 participants at high risk of cancer due to their having a cancer pre-cursor condition will provide the required answers.

25 Mar 2026

Firmer potatoes lower post-meal blood sugar spikes

Minimally cooked potatoes may reduce blood sugar spikes, but benefits are short-lived and specific to certain populations, as shown in recent research.

23 Mar 2026

Oral semaglutide fails to slow early Alzheimer’s decline in two phase 3 trials

Two large phase 3 trials found that oral semaglutide 14 mg did not slow cognitive or functional decline over 104 weeks in people with early symptomatic, amyloid-positive Alzheimer’s disease. Semaglutide was generally consistent with its known safety profile and showed some biomarker changes, but these did not translate into clinical benefit.

22 Mar 2026

GLP-1 drugs cut heart and kidney risks in type 1 diabetes study

In a large target trial emulation of 174,678 people with type 1 diabetes, GLP-1 receptor agonist initiation was associated with lower risks of major cardiovascular events and end-stage kidney disease over five years. The study also found no increased risk of hospitalization for diabetic ketoacidosis or severe hypoglycemia, supporting further randomized trials of GLP-1RAs as adjunctive therapy in type 1 diabetes.

22 Mar 2026

How long should you take GLP-1 drugs? Study links longer use to lower heart risk

Continuous use of GLP-1 receptor agonists in adults with type 2 diabetes was associated with a lower risk of major cardiovascular events compared with sulfonylureas, with benefits increasing over time. Discontinuation or interruption was associated with a progressive loss of this protective effect, with risks approaching those of comparator therapy.

19 Mar 2026

Study finds GLP-1 medicines cut fat while preserving muscle function

Researchers found that GLP-1 medicines caused weight loss mainly through fat reduction, with only modest decreases in absolute muscle mass and no disproportionate loss of muscle function. In mice, physical performance improved, while in a small 12-week human pilot trial, strength was preserved despite reduced thigh muscle size.

18 Mar 2026

Patients who stop GLP-1 drugs often restart or try alternatives

The study highlights that after stopping GLP-1 medications, many patients resume treatment or try alternatives, influencing weight management strategies.

17 Mar 2026

Why do some people respond better to GLP-1 drugs? Gut microbiome may hold clues

A review in the Canadian Journal of Physiology and Pharmacology examines emerging evidence linking glucagon-like peptide-1 receptor agonists (GLP-1 RAs), the gut microbiome, and obesity treatment outcomes. The authors conclude that microbiome changes seen during therapy are most likely driven by diet, behavior, and weight loss, although microbial profiling may eventually help predict patient responses.

15 Mar 2026

Prebiotic fiber supplement lowers pain sensitivity in people with knee osteoarthritis

A new study has found that a prebiotic fiber supplement reduced pain, improved grip strength, and lowered pain sensitivity in people with knee osteoarthritis (OA) - with far fewer dropouts than a digital physiotherapy programme.

12 Mar 2026

Most weight lost on GLP-1 drugs returns within a year after stopping

The cessation of GLP-1RAs is linked to a 60% weight regain within a year, emphasizing the importance of tailored strategies for effective long-term weight loss.

9 Mar 2026

Could GLP-1 drugs help curb addiction? Large veteran study points to potential benefit

A large cohort study of more than 600,000 US veterans with type 2 diabetes found that initiating GLP-1 receptor agonists was associated with lower risks of developing substance use disorders compared with SGLT-2 inhibitors. Among veterans with existing substance use disorders, GLP-1 receptor agonist use was also linked to fewer overdose events, hospitalizations, and suicide-related outcomes.

8 Mar 2026

Med14 protein drives GLP-1 benefits in pancreatic beta cells

GLP-1s are building a reputation as "wonder drugs." First characterized for their ability to improve insulin release and treat diabetes, the drugs were later found to promote weight loss and improve cardiovascular health.

6 Mar 2026

Engineered lettuce may turn injectable GLP-1 therapies into oral pills

Few drugs have entered mainstream awareness as quickly or as dramatically as glucagon-like peptide-1, or GLP-1 receptor agonists. Initially approved by the FDA for the treatment of type 2 diabetes, they have since also transformed the therapeutic landscape of obesity and weight management.

6 Mar 2026

How are GLP-1 drugs reshaping treatment for obesity, diabetes, and heart disease?

A comprehensive Lancet review synthesizes evidence from major clinical trials showing that GLP-1 receptor agonists and next-generation incretin therapies deliver substantial weight loss while reducing cardiovascular and kidney risks. Emerging dual, triple, and oral agents may further expand treatment options and improve outcomes across obesity, type 2 diabetes, and related metabolic diseases.

3 Mar 2026

The surprising neurological benefits of GLP-1s

For people with chronic migraine, taking glucagon-like peptide-1 receptor agonists, or GLP-1 drugs, for other conditions such as diabetes and weight loss, was associated with fewer emergency department visits and hospitalizations overall, and with less need for medications used to stop and prevent migraine attacks, according to a preliminary study released March 1, 2026, that will be presented at the American Academy of Neurology's 78th Annual Meeting taking place April 18-22, 2026, in Chicago and online.

2 Mar 2026

Combined GLP-1 and GLP-2 treatment appears safe but does not beat placebo for obesity

In a 12-week randomized phase IIa trial in adults with obesity, the dual GLP-1/GLP-2 receptor agonist dapiglutide was well tolerated but did not achieve statistically significant weight loss compared with placebo at 4 mg or 6 mg doses. Although the higher dose showed modest within-group weight reduction and improved HbA1c, unexpectedly substantial placebo-associated weight loss limited the observed treatment effect.

24 Feb 2026

Gut microbiome may shape response to GLP-1 drugs, new review suggests

This review examines how GLP-1 receptor agonists and the gut microbiome influence one another through bile acid signaling, short-chain fatty acids, and inflammatory pathways. It explores how microbial composition may shape treatment response and highlights the need for controlled human studies to enable microbiome-informed precision therapy.

19 Feb 2026