Sleep for Health Study on the Effects of Cognitive Behavioral Therapy for Insomnia on Diabetes Risk

This study tests whether treating insomnia with Cognitive Behavioral Therapy for Insomnia (CBT-I) — a proven non-drug approach to improving sleep — can also lower the risk of developing type 2 diabetes in people who already have prediabetes (blood sugar slightly above normal but not yet diabetic). **You may be eligible if...** - You are between 22 and 79 years old - You have prediabetes - You have insomnia - You have regular access to a device with internet **You may NOT be eligible if...** - Your BMI is above 40 - You have shift work or severely irregular sleep schedules - You have moderate to severe sleep apnea - You already have type 1 or type 2 diabetes, or are on blood sugar medications - You have had bariatric surgery recently or plan to have it - You received a full course of CBT-I in the last 12 months Talk to your doctor to see if this trial is right for you.