Exploring the links between sleep, obesity, and mental health

Circadian Disturbances in People With Mental Disease

Observational Esbjerg Hospital - University Hospital of Southern Denmark · NCT05413486

This study looks at how sleep patterns and certain genes might connect obesity with bipolar disorder and schizophrenia in people with different body weights.

Quick facts

Study typeObservational
Enrollment86 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorEsbjerg Hospital - University Hospital of Southern Denmark Academic / other
Locations1 site (Esbjerg)
Trial IDNCT05413486 on ClinicalTrials.gov

What this trial studies

This observational study investigates the relationship between obesity, bipolar disorder, schizophrenia, and circadian rhythm disorders. It aims to analyze how specific 'clock genes' are expressed in individuals with these conditions, focusing on those with a Body Mass Index (BMI) over 30 and those with a normal BMI. By examining biological markers related to circadian rhythms, the study seeks to uncover the interplay between these health issues. Participants will be grouped based on their BMI and mental health status to facilitate a comprehensive analysis.

Who should consider this trial

Good fit: Ideal candidates include individuals with a BMI over 30 who have schizophrenia or bipolar disorder, as well as those without psychiatric conditions but with obesity.

Not a fit: Patients with a BMI below 18.5 or those taking melatonin supplements may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to better understanding and management of obesity and mental health disorders through circadian rhythm interventions.

How similar studies have performed: While the interplay between these conditions is recognized, this specific approach to studying biological markers in relation to circadian rhythms is relatively novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Fulfilling the criteria for one of the four study groups:

* People with BMI \> 30 kg/m2 and schizophrenia spectrum disorder (N=22)
* People with BMI \> 30 kg/m2 and bipolar disorder spectrum disorder (N=22)
* People with BMI \> 30 kg/m2 without psychiatric disease or sleep disorders (N=22)
* People with BMI 18.5 - 25kg/m2 and no psychiatric disease or sleep disorders (N=20)

Exclusion Criteria:

* Participants taking oral supplements of melatonin are excluded if pausing is deemed inappropriate.

Where this trial is running

Esbjerg

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Bipolar DisorderSchizophreniaObesityCircadian Rhythm DisordersCircadian disturbancesHair folliclesClock genesCortisol
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.