Hormonal
In adults with Type 1 Diabetes (T1D) and obesity (BMI ≥27 kg/m²), 12 months of treatment with GLP-1 receptor agonists (tirzepatide, semaglutide, or liraglutide) produces significant weight loss (7.1%–10.9%) without increasing the risk of severe hypoglycemia or diabetic ketoacidosis (DKA).
If you have Type 1 Diabetes and obesity, GLP-1 based medications (tirzepatide, semaglutide, or liraglutide) can help you lose significant weight (7-11%) over a year without increasing your risk of dangerous low blood sugar or DKA, provided your insulin regimen is stable. These drugs also modestly improve blood sugar control and reduce insulin needs.
Tirzepatide, semaglutide, and liraglutide reduced bodyweight and improved in selected metabolic risk markers over 12 months without increasing the risk for hypoglycaemia or DKA.
Why this rating
Real-world observational study with propensity score matching, but lacks randomization and has small sample sizes per drug.
Source
Weight loss in people with type 1 diabetes over 12 months: Real‐world data comparing tirzepatide, semaglutide and liraglutide
Ebaa Al‐Ozairi et al. · Diabetes Obesity and Metabolism · 2025
DOI 10.1111/dom.70172
More from this paper
- Among GLP-1/GIP agonists used in Type 1 Diabetes, tirzepatide produces significantly greater weight loss (10.9%) compared to semaglutide (9.9%) and liraglutide (7.1%).Moderate
- GLP-1/GIP agonists reduce daily insulin requirements in Type 1 Diabetes patients by 8.3 to 11.4 units per day over 12 months, likely due to reduced insulin resistance.Moderate
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
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