Clinical trial No longer in our active list Interventional Ages 18 to 75

Improving nutrition for patients with rheumatic diseases

Official title: Nutritional Intervention in Rheumatic Diseases: Effect of Marine Omega-3 Fatty Acids and Individual Dietary Guidance

Run by Haukeland University Hospital · NCT04586933 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study is testing if changing diets and adding omega-3 supplements can help people with inflammatory rheumatic diseases like rheumatoid arthritis feel better and manage their symptoms.

Quick facts

Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment120 (estimated)
SponsorHaukeland University Hospital
Academic / other
Locations1 site (Bergen, Vestland)
Trial IDNCT04586933 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 to 75 diagnosed with rheumatoid arthritis or spondyloarthritis who can understand Norwegian and have not changed their medication in the last 12 weeks.

Probably not a fit

Patients with conditions that contraindicate omega-3 supplementation or those who are pregnant, lactating, or have severe illnesses may not benefit from this study.

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

What this trial studies

This study investigates the impact of dietary changes and omega-3 supplementation on disease activity in patients with inflammatory rheumatic diseases such as rheumatoid arthritis and spondyloarthritis. Participants will receive dietary guidance aimed at increasing omega-3 fatty acids and complete protein intake while reducing saturated fats and sugars. The study will involve collecting various health metrics, including body composition and clinical parameters, at multiple time points over a year. The goal is to determine if improved nutritional status can lead to better disease management.

Why it matters

Potential benefit: If successful, this study could lead to improved disease management and quality of life for patients with inflammatory rheumatic diseases.

How similar studies have gone: Previous studies have shown that dietary interventions, particularly with omega-3 fatty acids, can positively affect disease activity in similar patient populations.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients must be diagnosed with one of the following diagnoses: rheumatoid arthritis, according to the ACR / EULAR 2010 criteria, psoriatic arthritis, according to the CASPAR criteria, axial spondylarthritis, including ankylosing spondylarthritis and non-radiographic spondylarthritis, according to the ASAS criteria
* Duration of illness ≥0.5 years
* Between 18 and 75 years
* Understand Norwegian
* The patient has given informed consent to participate
* No change in medication the last 12 weeks before inclusion

Exclusion Criteria:

Diagnoses / conditions that make it difficult to follow a dietary intervention and / or supplementation of omega-3s, including:

* Conditions or use of medications where omega-3 is contraindicated
* Pregnancy / lactation
* Allergy to soy or fish
* Severe liver disease
* Severe mental or physical illnesses, such as insulin-requiring diabetes

Where it's running

  • Haukeland University Hospital
    Bergen, Vestland, Norway
    Recruiting

Study contacts

  • Principal investigator: Anne-Kristine H Halse, MD, PhD — Haukeland University Hospital
  • Study coordinator: Marie N Olsen, Msc
  • Email: marienjerve@gmail.com
  • Phone: 0047-95802404

Similar studies

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

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.