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Study identifier: NCT06507722 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Night Owl Metabolism

Condition: PreDiabetes · Overweight · Impaired Glucose Tolerance  ·  Sponsor: Johns Hopkins University

PhaseNA
Planned participants70
Who can joinAll sexes, 18 Years to 23 Years
Healthy volunteersYes

About this study

The proposed study uses a novel and rigorous randomized cross-over study design in youth (18-23y) with late and non-late chronotype (n=35 per group) to assess the glycemic effect of "aligning" an oral glucose tolerance test (OGTT) or first-meal of day to a subject's chronotype. Both groups will undergo 2 OGTTs (aligned and mis-aligned with chronotype) to compare glucose tolerance and insulin sensitivity within-subject (primary outcome) and between groups (Aim 1). Then, youth will also undergo two standardized meals (aligned and mis-aligned with chronotype) while wearing continuous glucose monitoring to compare post-prandial glucose excursions within-subject and between groups (Aim 2). A pilot Exploratory Aim 3 (n=12 per group) will investigate delayed melatonin patterns under dim-light as a potential pathophysiologic mechanism behind abnormal glucose tolerance in youth with late chronotype on morning OGTTs.

This description comes directly from the study's public registry record.

Talk to the study team

Talia Hitt, MD/MPH/MSHP  ·  860-324-0072  ·  thitt2@jhmi.edu

Always discuss trial participation with your own doctor first.

Locations (1)

Johns Hopkins School of MedicineBaltimore, Maryland, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06507722