Assessing dietary intake and IBS symptoms using a food frequency questionnaire

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study evaluates the reliability of a newly developed food frequency questionnaire (FFQ) in assessing dietary intake, including FODMAPs, among different populations. Participants will complete online questionnaires regarding their demographics, psychological variables, self-assessed physical activity, and irritable bowel syndrome (IBS) symptoms. The study aims to validate the FFQ by recruiting university students, staff, and community members, as well as IBS patients from a gastroenterology outpatient clinic. Data will be collected through the FFQ and a 4-day food diary to understand the relationship between diet and IBS symptoms.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* 18 - 65 years;
* Provide written informed consent;
* Living in Belgium

Exclusion Criteria:

* Diet \< 8 weeks prior to participation;
* Known or suspected eating disorder;
* Major psychiatric disorder;
* Known gastro-intestinal disease (IBS is allowed);
* Any malignancy in the past 3 years (basocellular carcinoma is allowed);
* Chemotherapy in the past 6 months;
* Infectious gastro-enteritis in the past 6 months (infectious gastro-enteritis defined as the concurrent presence of one of the following signs during 2 or more consecutive days: fever, vomiting, sudden onset of diarrhea, hospitalization because of these symptoms);
* Previous abdominal surgery (appendectomy and cholecystectomy are allowed);
* Alcohol abuse defined as \> 14 U per week;
* Use of illicit drugs;
* Intake of drugs with known major gastro-intestinal side effects.
* Initiation of neuromodulators less than 3 months before participation. Neuromodulators are allowed when taken at a stable dose for at least 3 months;
* Pregnancy.

Where it's running

• UZ Brussel
  Jette, Brussels Capital, Belgium Recruiting

Study contacts

• Study coordinator: Sébastien Kindt
• Email: Sebastien.kindt@uzbrussel.be
• Phone: +32 2 477

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.