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Effect of Sleep Extension on Ceramides in People With Overweight and Obesity

The overall goal is to determine how a sleep extension intervention (increasing time in bed) in individuals who maintain less than 6.5 hours sleep per night affects their plasma ceramides and insulin sensitivity. Participants will undergo a randomized controlled trial, with sleep extension (intervention) and healthy lifestyle (control) groups. The sleep extension is designed to increase participant's time in bed by 2 hours per night. Alternatively, the control group will receive basic health information (e.g…

ClinicalTrials.gov IDNCT06180837

PhaseNA

Enrollment70

SponsorUniversity of Utah

Age18 Years

SexALL

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Conditions studied

Lifestyle Factors, Overweight and Obesity, Insulin Sensitivity, Eating Habit, Sleep Hygiene, Type 2 Diabetes, Sleep, Sleep Deprivation, Insufficient Sleep Syndrome

About this study

Interventions

Behavioral: Sleep Extension Intervention — Sleep extension-based intervention focused on increasing time spent in bed by 2 hours per night by directly scheduling assigned bed and waketimes based on participant's individual schedules. Participants will receive weekly sleep tips and counseling on improving their sleep duration.

Primary outcomes

Total Plasma Ceramides (Immediately after the intervention)
Insulin Sensitivity (Immediately after the intervention)

Eligibility information

Inclusion Criteria: 1. Age: 18-45 years old; equal numbers of men and women 2. Body mass index (BMI): 27.5-34.9 kg/m2 3. Sleep Habits: habitual self-reported average total sleep time (TST) \<6.5 hours per night for prior 6 months Exclusion Criteria: 1. Clinically diagnosed sleep disorder or major psychiatric illness 2. Evidence of significant organ dysfunction or disease (e.g., heart disease, kidney disease) 3. Clinically diagnosed diabetes or fasting plasma glucose ≥126 mg/dL or HbA1c ≥6.5% 4. Use of prescription drugs or substances known to influence sleep or glucose metabolism, or anticoagulant medications. 5. Cancer that has been in remission less than 5 years 6. Pregnant/nursing, experiencing menopause or post-menopausal 7. Shift-work: current or history of within last year 8. Weight change: \>10% of body weight over prior six months 9. Current enrollment in weight loss or physical activity program like the Diabetes Prevention Program 10. Currently smoking 11. Alcohol intake\>14 drinks per week or \>3 drinks per day

Study locations

College of Health Research Complex--University of Utah, Salt Lake City, Utah 84112 United States

Before you participate: Varda Clinical is an independent discovery tool, not the study sponsor or a medical provider. Eligibility can only be determined by the official study team. Discuss potential risks and benefits with a qualified healthcare professional.

Source: ClinicalTrials.gov. Record last refreshed by Varda Clinical: 2026-09-27.