Journal
NUTRITION REVIEWS
Volume 79, Issue 4, Pages 410-428Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/nutrit/nuaa033
Keywords
dietary supplement; fasting; fish oils; Mediterranean diet; rheumatoid arthritis; vegetarian diet
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Studies suggest that high doses of Omega-3 polyunsaturated fatty acids can reduce RA disease activity, while Vitamin D supplementation and dietary sodium restriction also have benefits for RA. Fasting can lead to significant but temporary subjective improvements, and the Mediterranean diet shows some improvements in RA disease activity, but other dietary interventions may have individualized responses.
Context: The impact of various dietary interventions on rheumatoid arthritis (RA), characterized by immune-inflammatory response, has been subject to increased attention. Objective: A systematic review was conducted to update the current knowledge on the effects of nutritional, dietary supplement, and fasting interventions on RA outcomes. Data Sources: Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, with prespecification of all methods, Medline and Embase were systematically searched for relevant articles. Data Extraction: Data were extracted by 2 independent reviewers. Results: A total of 70 human studies were identified. Administration of omega-3 polyunsaturated fatty acids at high doses resulted in a reduction in RA disease activity and a lower failure rate of pharmacotherapy. Vitamin D supplementation and dietary sodium restriction were beneficial on some RA outcomes. Fasting resulted in significant but transient subjective improvements. While the Mediterranean diet demonstrated improvements in some RA disease activity measures, outcomes from vegetarian, elimination, peptide, or elemental diets suggested that responses are very individualized. Conclusion: Some dietary approaches may improve RA symptoms and thus it is recommended that nutrition should be routinely addressed.
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