About this trial
This study will test whether biological sex influences how the body responds to circadian misalignment-a mismatch between the internal body clock and the timing of sleep and eating (as can occur with shift work or jet lag). Researchers will examine how circadian misalignment affects appetite regulation (hunger/fullness) and glucose metabolism (blood sugar control), and whether these effects differ between females and males. Findings may help inform more personalized shift work schedules and targeted strategies to reduce metabolic health risks and sex-related differences in clinical care.
Eligibility criteria
Qualifiers
18-40 years of age
Body Mass Index 18.5-24.9 kg/m2
Non-smokers, no current tobacco or e-cigarette use
Healthy with no acute or chronic medical and psychiatric disorders
Disqualifiers
History of drug or alcohol dependency
History of psychiatric illness or disorder
Pregnant
No prior gender-affirming hormone therapy and no gonadectomy
Trial design
Treatments tested in this trial
- Day shift
- Night shift