Glp-1 Receptor Agonists Linked To Lower Dementia Risk In Type 2 Diabetes

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GLP-1 receptor agonists, a people of supplier utilized to dainty type 2 diabetes, apt trump nan wide prescribed metformin for curbing dementia consequence successful group pinch nan condition, finds nan largest study of its kind, published successful nan unfastened entree journal BMJ Open Diabetes Research & Care.

The findings propose that early objective guidelines for nan curen of type 2 glucosuria would do good to see prioritising narcotics pinch some humor glucose and neuroprotective effects, opportunity nan researchers. 

Published investigation suggests that some GLP-1 receptor agonists and metformin, which are wide utilized to dainty type 2 diabetes, protect nan brains of group pinch nan disease. But arsenic yet location person been nary nonstop real-world comparisons of nan imaginable effect of these narcotics connected dementia risk-a consequence that is astir 70% higher successful group pinch type 2 diabetes.

To research this further, nan researchers drew connected anonymised physics wellness records from a world wellness investigation web (Trinetx) spanning nan play 2004 to 2024 to way nan improvement of dementia successful patients pinch type 2 diabetes, treated pinch either GLP-1 receptor agonists aliases metformin (87,229 patients successful each group; mean property 58) for astatine slightest 6 consecutive months. 

There was nary important quality successful vascular dementia consequence betwixt nan 2 types of drug, erstwhile utilized arsenic first statement therapy.

But GLP-1 receptor agonist usage was associated pinch a importantly little cumulative (10%) consequence of processing dementia, overall, pinch an incidence of almost 2.5% (2130 people) compared pinch an incidence of astir 5% (4215 people) for metformin. 

And specifically, taking this type of supplier was associated pinch a 12% little consequence of processing Alzheimer's disease, and a 25% little consequence of processing non-vascular dementias than metformin use. 

Further in-depth analyses showed that these affirmative effects were evident crossed each property groups, but pinch nan strongest effect among nan complete 60s, women, and those of White ethnicity. 

Risk of decease from immoderate origin was besides lower: astir 5% of those treated pinch GLP-1 receptor agonists died compared pinch astir 9% of those treated pinch metformin.

"Both medications show neuroprotective properties, specified arsenic reducing neuroinflammation and oxidative stress, improving insulin sensitivity, and enhancing cerebrovascular health, which apt lend to their benefits successful wide dementia," explicate nan researchers.

But dissimilar metformin, whose benefits chiefly deduce from systemic metabolic effects, GLP-1 receptor agonists exert nonstop cardinal nervous system effects by crossing nan blood-brain barrier, they add.

"However, nan multifactorial quality of [vascular dementia], driven by cerebrovascular damage, specified arsenic mini alloy illness and achromatic matter lesions, poses important challenges for pharmacological interventions targeting metabolic aliases neurodegenerative pathways," they continue.

This is an observational study, and arsenic such, nary patient conclusions tin beryllium drawn astir origin and effect. And nan researchers constituent retired that nan search period, while capable for watching dementia outcomes, whitethorn not afloat seizure semipermanent cognitive effects, particularly fixed nan progressive quality of Alzheimer's disease.

But they nevertheless conclude: "Given nan terrible societal, familial, and economical load of diabetes-related dementia, these findings raise important considerations astir nan domiciled of GLP-1 [receptor agonists] arsenic first-line therapies successful [type 2 diabetes] management. 

While further semipermanent studies are warranted to validate these results, integrating GLP-1 [receptor agonists] arsenic superior therapeutic agents whitethorn correspond a paradigm displacement successful preventing nan cognitive complications of diabetes."

Source:

Journal reference:

Sun, M., et al. (2025). Evaluating GLP-1 receptor agonists versus metformin arsenic first-line therapy for reducing dementia consequence successful type 2 diabetes. BMJ Open Diabetes Research & Care. doi.org/10.1136/bmjdrc-2025-004902.

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