The Study
Gluten-free diet attenuates the impact of exogenous vitamin D on thyroid autoimmunity in young women with autoimmune thyroiditis: a pilot study
This study watched two groups of women over six months and noticed that vitamin D seemed to help less in those who ate no gluten. But it didn’t randomly assign who ate what, so we can’t be sure the diet caused the difference — maybe other things like family habits played a role.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Women with Hashimoto’s took vitamin D pills, and their thyroid antibodies went down — but not as much if they were already eating no gluten.
Where does this study sit?
Systematic Reviews & Meta-analyses
Max 100Randomized Trials
Max 90Cohort Studies
Max 72Case-Control
Max 58Cross-Sectional
Max 44Case Reports & Series
Max 30Expert Opinion
Max 533 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — if you have Hashimoto’s and take vitamin D, going gluten-free might make the vitamin D less effective at calming your immune system.
- 2Vitamin D raised vitamin levels in everyone.
- 3Antibodies dropped more in those not on a gluten-free diet.
- 4Only those not on the diet had improved thyroid hormone production (SPINA-GT).
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Scandinavian Journal of Clinical and Laboratory Investigation
Year
2022
Authors
R. Krysiak, K. Kowalcze, B. Okopień
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.