Salivary Cortisol and Hypercortisolism in Type 2 Diabetes

This study explores whether elevated cortisol (a stress hormone) contributes to poorly controlled Type 2 diabetes. Researchers will measure cortisol levels through saliva and a wearable patch to see if hidden cortisol excess might be making blood sugar harder to manage. **You may be eligible if...** - You are between 18 and 80 years old - You have Type 2 diabetes that is difficult to control (high HbA1c despite multiple medications) - You are taking 3 or more diabetes medications, or insulin plus other drugs, or have complications/high blood pressure requiring multiple medications **You may NOT be eligible if...** - You have Type 1 diabetes or newly diagnosed diabetes (less than 1 year) - You have used systemic steroid medications (like prednisone) in the past 3 months - You are pregnant or breastfeeding - You have severe heart, liver, or kidney problems - You had a serious diabetes emergency (like ketoacidosis) in the past 3 months - You have already been diagnosed with Cushing's syndrome Talk to your doctor to see if this trial is right for you.