Hormonal
GLP-1 receptor agonists (GLP-1RAs) as adjunctive therapy to insulin significantly reduce body weight, HbA1c, and total daily insulin requirements in patients with type 1 diabetes and overweight or obesity.
If you have Type 1 Diabetes and are overweight, adding a GLP-1RA (like semaglutide or liraglutide) to your insulin regimen can help you lose weight (average 4-6 kg), lower your HbA1c slightly, and significantly reduce your daily insulin needs (by ~9 units). This is generally safe, though you may experience temporary nausea and a slightly higher risk of low blood sugar, which can be managed by adjusting your insulin dose.
GLP-1RA treatment was associated with a body weight reduction of 4.31 kg (95% CI: 3.61–5.00 kg) and a HbA1c reduction of 0.25% (95% CI: 0.18–0.32%). Across all studies, insulin dosage was reduced by 9.24 U/day (95% CI: 7.04–11.45 U/day).
Why this rating
Systematic review and meta-analysis of 13 randomized controlled trials, though with significant heterogeneity.
Source
Glucagon‐like peptide‐1 receptor agonist treatment reduces body weight and improves glycaemic outcomes in patients with concurrent overweight/obesity and type 1 diabetes: A systematic review and meta‐analysis
Amanda R. Purcell et al. · Diabetes Obesity and Metabolism · 2025
DOI 10.1111/dom.70188
Related findings · Hormonal
- Initial treatment for type 2 diabetes should be a combination of metformin and either an SGLT-2 inhibitor or a GLP-1 receptor agonist to achieve cardiorenal protection, rather than monotherapy or older agents like sulfonylureas.Strong
- For patients with specific monogenic obesity syndromes (leptin deficiency, POMC/PCSK1/LEPR mutations), targeted pharmacotherapy (recombinant leptin or setmelanotide) is highly effective and should be prioritized, unlike in polygenic obesity.Strong
- Continued weekly administration of 2.4 mg subcutaneous semaglutide prevents weight regain and promotes further weight loss in adults with overweight or obesity, whereas switching to placebo results in significant weight regain.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →