Dinner Time for Obesity and Prediabetes
Eligible age
18–50 yrs
Accepts
All genders
Locations
1 state
Healthy volunteers
Yes
See if you qualify for this study
Answer a few quick questions about your location and health. Takes about a minute.
About this study
Obesity and its metabolic complications are leading causes of global morbidity and mortality. Evidence is mounting that inappropriate timing of food intake contributes to obesity. Specifically, late eating is associated with greater weight gain and metabolic syndrome. However, the mechanism by which late eating harms metabolism is not fully understood but may be related to mis-timing of food intake in relation to the body's endogenous circadian rhythm. Conversely, harmonization of eating timing with endogenous circadian rhythm may optimize metabolic health. In this study the investigators will use gold-standard methods of characterizing circadian rhythm in humans to examine the metabolic impacts food timing relative to endogenous circadian rhythm.
Sponsor: Johns Hopkins University
You may qualify if…
- ✓ For the Normal-Weight Healthy (NWH) cohort: Healthy male and female adults, age 18-50, with BMI 18-24.9 kg/m2 inclusively
- ✓ For the Obesity-Prediabetes (OPD) cohort: Male and female adults, age 18-50, with BMI ≥30 kg/m2 and prediabetes
- ✓ All participants must be able to understand study procedures, to comply with the procedures for the entire length of the study and be fully mobile.
You may not qualify if…
- ✕ Sleep disorder including insomnia, untreated moderate-severe sleep apnea, restless leg syndrome, or narcolepsy
- ✕ Night shift work
- ✕ Extreme delayed sleep phase defined as self-reported routine bedtime later than 1:00 AM or having mid-sleep on free days later than 5:00 AM on the Munich Chronotype Questionnaire (MCTQ) or DLMO later than 24:00
- ✕ Gastroesophageal reflux disease that affects ability to tolerate a dinner close to bedtime
- ✕ Active smoking
- ✕ Current drug or alcohol use or dependence that, in the opinion of the site investigator, would interfere with adherence to study requirements.
- ✕ Diabetes (type 1 or 2) or on any diabetes medications besides metformin
- ✕ Evidence of metabolic or cardiovascular disease, or disease that may influence metabolism (e.g. cancer, thyroid disease)
Where it's recruiting
Baltimore · Bethesda
Source: ClinicalTrials.gov · NCT05745441 · last updated 2026-04-13