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Systematic Review Article

<i>Citrus</i> Flavonoids and Autoimmune Diseases: A Systematic Review of Clinical Studies

[ Vol. 30 , Issue. 19 ]


Laura Musumeci, Alessandro Maugeri, Caterina Russo, Giovanni Enrico Lombardo*, Santa Cirmi* and Michele Navarra   Pages 2191 - 2204 ( 14 )


Background: Autoimmune diseases are chronic disorders in which the immune system does not recognize and attacks one self’s healthy components. In this context, although natural remedies might represent a promising therapeutic strategy, evidence regarding Citrus flavonoids is still controversial.

Objective: To summarize and critically discuss the clinical evidence on the effects of Citrus flavonoids on managing autoimmune diseases.

Method: A systematic review of articles has been carried out independently by two authors using MEDLINE, Scopus and ISI Web of Science databases. Search terms comprised keywords related to Citrus flavonoids and autoimmune diseases. The last search was performed on the 16th of March, 2021. No language restrictions were applied. Systematic review and study selection were conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Before starting the review, the authors defined the types of articles to be included. Three reviewers independently carried out the extraction of papers.

Results: Ten clinical studies fulfilled the eligibility criteria and were included in the final review.

Conclusion: The studies discussed in this review are heterogeneous. Indeed, some studies suggest using Citrus flavonoids in the frame of autoimmune disorders, whereas others discourage it. Hence, this systematic review highlights the need for further large-scale clinical studies to define the exact role of Citrus flavonoids in managing autoimmune diseases (PROSPERO number CRD42021234903).


Autoimmune diseases, immune system, Citrus flavonoids, natural compounds, nutraceuticals, clinical studies, systematic review, supplement, rheumatoid arthritis, psoriasis, diabetes, colitis, thyroiditis.


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