NCT06627504

Type 1 Diabetes REst for Metabolic Health

Mechanisms Underlying the Relationship Between Sleep and Circadian Health and Cardiometabolic Risk in Adolescents With Type 1 Diabetes

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 50 (estimated)
• Sponsor: University of Colorado, Denver · Academic / Other
• Sex: All
• Age: 14 Years – 19 Years
• Healthy volunteers: Not accepted

Summary

Research has shown a link between poor sleep health and late circadian timing with cardiometabolic health in adolescents with type 1 diabetes (T1D). Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in T1D, which begins as early as adolescence, and current therapies are limited. Therefore, this study plans to investigate whether cardiometabolic health can be improved with increased sleep duration and advanced circadian timing in adolescents with T1D with habitually insufficient sleep. To answer this question, investigators will study adolescents with T1D who get \<7h sleep on school nights and measure changes in insulin sensitivity, glycemic control, and vascular function after one month of a sleep and circadian intervention (1+ hour longer time in bed each night plus evening melatonin and morning light therapy) compared to one month of typical sleep (usual school schedule).

Conditions

• Type 1 Diabetes (T1D)
• Sleep Health

Interventions

Type	Name	Description
BEHAVIORAL	Sleep Health and Circadian Timing Intervention	Participants will be prescribed a sleep schedule that allows them to obtain at least 1h more time in bed compared to their typical school week schedule. In addition, participants will be provided with pharmaceutical-grade exogenous melatonin and instructed to take 500mcg 2 hours before their scheduled bedtime. They will also be asked reduce evening light exposure starting 2 hours before bedtime by limiting household lights and dimming electronics. In the mornings, participants will be exposed to bright light for 30 minutes after waking by wearing provided ReTimer light therapy glasses.

Timeline

• Start date: 2025-08-12
• Primary completion: 2029-05-31
• Completion: 2029-08-31
• First posted: 2024-10-04
• Last updated: 2025-08-26

Locations

1 site across 1 country: United States