Trial reportEuropean journal of nutrition2022
Vitamin D supplementation in people with IBS has no effect on symptom severity and quality of life: results of a randomised controlled trial.
Trial report in European journal of nutrition, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed, 4 syntheses or guidelines pooled it, 27 citations in OpenAlex.
- A systematic review and meta-analysis of diet and nutrient intake in adults with irritable bowel syndrome.Neurogastroenterology and motility · 2024Pooled it
- Exploring the Role of Vitamin D and the Gut Microbiome: A Cross-Sectional Study of Individuals with Irritable Bowel Syndrome and Healthy Controls.Biological research for nursing · 2023Pooled it
- Pooled it
- Vitamin D Supplementation and Mental Health in Inflammatory Bowel Diseases and Irritable Bowel Syndrome Patients: A Systematic Review.Nutrients · 2021Pooled it
- Trial
- The Ten Dietary Commandments for Patients with Irritable Bowel Syndrome: A Narrative Review with Pragmatic Indications.Nutrients · 2025Review
- Vitamin D Deficiency and Supplementation in Irritable Bowel Syndrome: Retrospective Evaluation of Subtype and Sex-Based Differences.Medicina (Kaunas, Lithuania) · 2025Article
- Placebo response variability on health-related quality of life outcomes in irritable bowel syndrome: an arm-based network meta-analysis.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025Review
- Contemporary Perspectives on the Role of Vitamin D in Enhancing Gut Health and Its Implications for Preventing and Managing Intestinal Diseases.Nutrients · 2024Review
- Article
- Role of in vitamin D in irritable bowel syndrome.World journal of clinical cases · 2023Review
- The efficacy of vitamin D supplementation for irritable bowel syndrome: narrow scope and GRADE miss-interpretation.Nutrition journal · 2023Review
- Article
- Association between Serum Vitamin D and Irritable Bowel Syndrome Symptoms in a Sample of Adults.Nutrients · 2022Article
- Article
- Gut Microbiota-Derived Metabolites in Irritable Bowel Syndrome.Frontiers in cellular and infection microbiology · 2021Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeSeveral small trials suggest a benefit of vitamin D supplementation in irritable bowel syndrome (IBS). The generalisability of these reports is limited by their design and scale. This study aimed to assess whether vitamin D supplementation improved IBS symptoms in a UK community setting.
methodsThis was a randomised, double-blind, placebo-controlled study. Participants were recruited from the community in winter months between December 2017 and March 2019. 135 participants received either vitamin D (3,000 IU p.d.) or placebo for 12 weeks. The primary outcome measure was change in IBS symptom severity; secondary outcomes included change in IBS-related quality of life.
resultsThe participants were analysed on an intent-to-treat basis. 60% of participants were vitamin D deficient or insufficient at baseline. Although vitamin D levels increased in the intervention arm relative to placebo (45.1 ± 32.88 nmol/L vs 3.1 ± 26.15 nmol/L; p < 0.001). There was no difference in the change of IBS symptom severity between the active and placebo trial arms (- 62.5 ± 91.57 vs - 75.2 ± 84.35, p = 0.426) over time. Similarly there was no difference between trial arms in τhe change in quality of life (- 7.7 ± 25.36 vs - 11.31 ± 25.02, p = 0.427).
conclusionsThere is no case for advocating use of vitamin D in the management of IBS symptoms. The prevalence of vitamin D insufficiency suggests routine screening and supplementation should be implemented in this population for general health reasons. This trial was retrospectively registered with ISRCTN (ISRCTN13277340) on 24th April 2018 after recruiting had been initiated.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.