This study looks at how a supplement called resveratrol can help people with type 1 diabetes (T1D). T1D is a type of diabetes where the body doesn’t make insulin, a hormone that helps control blood sugar. Resveratrol is thought to improve the function of the endothelin-B receptor (ETBR) and mitochondria in muscles. ETBR helps blood circulation, and mitochondria are like tiny power plants in cells. The study will last for 12 weeks. Participants will take either resveratrol or a placebo, which is a harmless pill that doesn’t do anything. The study will use special tools, like near-infrared spectroscopy (NIRS), to check muscle function without hurting the skin.

• The study lasts 12 weeks with resveratrol or placebo treatment.
• Participants must have type 1 diabetes but not other major diseases.
• Regular visits are needed to monitor progress and effects.

Adults with T1D who don't have other major health issues can join. If you have any major health problems or are pregnant, you should not participate. This study could help improve muscle and heart health in people with T1D.