Investigating how colchicine affects decision-making related to food in overweight individuals

The Effect of Colchicine on Food-related Effort-based Decision Making in Brain and Behaviour in Overweight and Obesity: the FLAIR-i Study

Not applicable Interventional Donders Centre for Cognitive Neuroimaging · NCT05785429

This study is testing if the anti-inflammatory drug colchicine can help overweight people make better food choices by reducing inflammation in their bodies.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment60 (estimated)
Ages18 Years to 59 Years
SexFemale
SponsorDonders Centre for Cognitive Neuroimaging Academic / other
Locations1 site (Nijmegen)
Trial IDNCT05785429 on ClinicalTrials.gov

What this trial studies

This study aims to explore the impact of inflammation on decision-making processes related to food choices in individuals with overweight and obesity. It will compare the effects of the anti-inflammatory drug colchicine against a placebo to determine if reducing inflammation can improve effort-based decision-making. Participants will undergo fMRI scans to assess brain responses while making food-related choices. The study will also evaluate whether these findings can be applied to real-world scenarios.

Who should consider this trial

Good fit: Ideal candidates are Dutch-speaking, right-handed females aged 18-59 with a BMI of 27 or higher and low-grade inflammation.

Not a fit: Patients with diabetes, recent infections, significant weight changes, or those on certain medications may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to new treatment strategies for improving decision-making and motivation in overweight and obese patients.

How similar studies have performed: While the specific approach of using colchicine in this context is novel, previous studies have indicated a link between inflammation and decision-making, suggesting potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* BMI ≥ 27 kg/m2
* Female sex
* Right-handed
* Age: 18-59 years
* Shoulder width of \< 68 cm (to fit into the MRI scanner)
* Dutch speaking - Sufficient level to understand task instructions
* Low-grade inflammatory state, as measured by C-reactive protein (CRP) between 3.0 and 10.0 mg/L

Exclusion Criteria:

* Having been vaccinated by any type of vaccine in the 4 weeks preceding the first test session
* Having had an infection characterized by a fever, or diagnosed by a medical physician in the 4 weeks preceding the first test session
* Diagnosed with Diabetes Mellitus type I or II
* Gained or lost \>2 points in BMI (kg/m2) over the last 6 months
* Followed an energy restricting diet during the last 2 months
* Having had bariatric surgery in the past 5 years
* Regular use of anti-inflammatory, anti-diabetic, weight-loss, and psychoactive medication
* Regular use of CYP3A4 inhibitors, P-glycoprotein inhibitors, statins, fibrates, ciclosporin, and digoxin, as a contraindication for colchicine
* Have renal impairment as evidenced by serum creatinine \>150 μmol/l or eGFR \<50mL/min/1.73m2, determined maximum 12 weeks before inclusion
* Have moderate to severe hepatic disease
* (History of) clinically significant psychiatric or neurological disorder
* (History of) clinically significant metabolic, cardiovascular, renal, liver, endocrinological, autoimmune or chronic inflammatory disease
* General medical conditions, such as sensorimotor handicaps, deafness, blindness or colour-blindness, as judged by the investigator
* Current or history of alcohol and/or drugs abuse (i.e. \>14 units per week)
* Habitual smoking, i.e. one or more cigarettes per day
* Pregnant, lactating or wishing to become pregnant in the period between the screening and until 3 months after the last study visit
* Participation in another weight loss, lifestyle or anti-inflammatory intervention in the context of research at the time of inclusion or during the study
* Contraindications for MRI

Where this trial is running

Nijmegen

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 Overweight and ObesityOverweightObesityInflammationfMRIMotivation
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.