Clinical trial Recruiting at 1 site Interventional Ages 6 and up

Improving blood sugar and reducing inflammation through diet changes.

Official title: GFREE - A Study for Improved Blood Sugar Levels, Reduced Inflammation and for Increasing Knowledge of the Connection Between Diabetes and COVID-19.

Run by Göteborg University · NCT05894746 · Data updated 2026-11-12

This study is testing whether a gluten-free diet and probiotics can help improve blood sugar levels and reduce inflammation in healthy people, including those with and without diabetes.

Quick facts

Study typeInterventional
Ages6 Years and up
SexAll
Enrollment60 (estimated)
SponsorGöteborg University
Academic / other
Locations2 sites (Gothenburg and 1 other locations)
StatusRecruiting
StartedMay 4, 2023
Main results expectedDecember 1, 2025
Study endsDecember 31, 2030
Registry record updatedOctober 15, 2024
Trial IDNCT05894746 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include healthy individuals, parents, and children or adults with or without diabetes who are interested in dietary interventions.

Probably not a fit

Patients diagnosed with celiac disease will not benefit from this study as they are excluded from participation.

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

What this trial studies

This clinical trial aims to investigate the effects of a gluten-free diet and probiotics on glycemic control and inflammation in healthy volunteers, including children, adolescents, and adults with or without diabetes. Participants will consume both gluten-free products and gluten-containing products, as well as gluten with probiotics, to assess their impact on inflammatory biomarkers and glycemic control. The study employs a cross-over design, allowing researchers to compare the effects within individuals over time. The goal is to identify individuals who may have an inflammatory response affecting their glycemic control.

Why it matters

Potential benefit: If successful, this study could lead to dietary recommendations that improve blood sugar management and reduce inflammation for individuals at risk of diabetes and autoimmune diseases.

How similar studies have gone: Other studies have shown promising results in dietary interventions for managing inflammation and glycemic control, suggesting potential success for this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

\- none

Exclusion Criteria:

\- A diagnosis of celiac disease

Where it's running

  • University of Skövde
    Skövde, Sweden
    Recruiting
  • Sahlgrenska University Hospital
    Gothenburg, Sweden
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Endoscopic sleeve gastroplasty for people with obesity and MASH

    This study will test whether endoscopic sleeve gastroplasty plus lifestyle changes helps adults with obesity and MASH lose weight and improve liver health compared with lifestyle changes alone.

    Recruiting at 2 sites Brigham and Women's Hospital · Boston, Massachusetts and 1 other locations · NCT06138821

  • Mediterranean diet and processed food in adults with celiac disease on a gluten-free diet

    This observational study looks at whether following a Mediterranean-style diet or eating more highly processed foods affects GI symptoms and quality of life in adults with celiac disease who have been on a strict gluten-free diet.

    Recruiting at 7 sites Istituti Clinici Scientifici Maugeri SpA · Brescia, BS and 6 other locations · NCT07915063

  • New virtual care pathway for older adults with chronic diseases

    A teleconsultation-based care pathway for adults 60+ with hypertension, diabetes, or dyslipidemia to see if it’s feasible and cost-saving in Malaysian primary care compared with usual clinic visits.

    Recruiting National University of Malaysia · Kuala Lumpur · NCT07843238

  • Exercise for Metabolic Syndrome and Fatty Liver in Adolescent Girls with Celiac Disease

    This study tests whether a 3-month walking program helps improve metabolic syndrome and fatty liver in adolescent females with celiac disease.

    Recruiting Cairo University · Giza, Dokki · NCT07832994

  • Benefits of Retained Insulin for Good Health in Diabetes

    This study tests whether preserving or restoring a person’s own insulin production can improve quality of life and blood sugar control for people who need insulin to manage diabetes.

    Recruiting at 4 sites Royal Devon and Exeter NHS Foundation Trust · Truro, Cornwall and 3 other locations · NCT07828626

  • Nutrition and physical activity education for children with celiac disease

    This study tests whether a combined nutrition and physical activity education program helps 8- to 12-year-olds with celiac disease improve body health, eating habits, activity, and quality of life while on a gluten-free diet.

    Recruiting Bahçeşehir University · Istanbul, Besiktas · NCT07750795

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.
Last reviewed 2026-11-14 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.