The Impact of Cognitive Behavioral Therapy for Insomnia (CBT-I) on Glycemic Control in Older Type 2 Diabetes (T2D) Comorbid With Insomnia

This study is testing whether cognitive behavioral therapy for insomnia (CBT-I) — a structured talking therapy that helps people change their thoughts and behaviors around sleep — can also improve blood sugar control in older adults with type 2 diabetes who also struggle with insomnia. Poor sleep and blood sugar problems are closely linked. **You may be eligible if...** - You are 60 years or older - You have type 2 diabetes with blood sugar that is not well controlled (HbA1c between 7.1% and 10%) - You are of Chinese ethnicity - You have insomnia (a score above 10 on a standard insomnia questionnaire) **You may NOT be eligible if...** - You have significant cognitive decline - You have untreated depression or another psychiatric disorder - You take sleeping pills or medications that affect sleep - You have had a stroke, vascular dementia, or other conditions affecting brain function - You have benign prostate enlargement or other conditions disrupting sleep for physical reasons Talk to your doctor to see if this trial is right for you.