NCT06627504 · University of Colorado, Denver
Type 1 Diabetes REst for Metabolic Health
(T1DREaM)
What this study is about
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.
View original scientific description
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).
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- High school students between the ages of 14-19 years;
- Diagnosed with T1D for ≥1 year;
- Using an insulin pump or other automated insulin delivery system;
- Have typically insufficient sleep, defined by ≤ 7 h per night on school days (assessed by actigraphy);
- With or at risk for obesity based on either above-average weight (BMI ≥50th percentile) or parental history of obesity (BMI ≥ 30 kg/m2);
- Tanner stage 4 or 5, based on breast development for girls and testicular size for boys.
Exclusion criteria
- Prior diagnosis of a sleep disorder (e.g., insomnia, obstructive sleep apnea) or an elevated screening score on the OSA subscale of the Sleep Disorders Inventory for Students-Adolescents measure
- Regular use of medications affecting sleep (e.g., stimulants, atypical antipsychotics, melatonin or other sleep aids);
- Regular use of medications affecting IR (systemic steroids, adjunctive diabetes medications);
- HbA1c ≥12%;
- Severe illness or DKA within 60 days;
- IQ\<70 or severe mental illness impacting sleep or ability to participate in the study;
- Night-shift employment or other obligations that would preclude adherence to the intervention.
Where
- Aurora, Colorado
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 3, 2026 · Source of record for eligibility and locations