The Korean Journal of Gastroenterology (Dec 2020)
Inflammatory Bowel Disease and Vitamin D
Abstract
Korean J Gastroenterol < Volume 76(6); 2020 < Articles Korean J Gastroenterol 2020; 76(6): 275-281 https://doi.org/10.4166/kjg.2020.160 Inflammatory Bowel Disease and Vitamin D Ki Bae Kim, Hyoung Woo Kim, Jun Su Lee, Soon Man Yoon Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea Correspondence to: Soon Man Yoon, Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, 776 1Sunhwan-ro, Seowon-gu, Cheongju 28644, Korea. Tel: +82-43-269-7241, Fax: +82-43-269-6354, E-mail: [email protected], ORCID: https://orcid.org/0000-0003-3885-6763 Received: November 22, 2020; Revised: December 19, 2020; Accepted: December 21, 2020; Published online: December 25, 2020. © The Korean Journal of Gastroenterology. All rights reserved. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Other Sections Abstract Vitamin D contributes to bone metabolism and acts as an immune modulator for both innate and adaptive immunity. The serum level of vitamin D has been associated with inflammatory diseases, such as inflammatory bowel disease (IBD). In epidemiologic studies, IBD patients have been shown to have low levels of vitamin D. The suboptimal circulating levels of vitamin D in IBD patients may be caused by low exposure to sunlight, dietary malabsorption, and the impaired conversion of active metabolites (1,25[OH]2D). Recent studies have demonstrated that vitamin D deficiency in IBD can increase the chance of disease recurrence, IBD-related hospitalization or surgery, and deterioration of quality of life. Supplementation with vitamin D is therefore thought to reduce the risk of flare-ups and the improvement of the quality of life in IBD patients. This review aims to summarize the latest knowledge on the effects of vitamin D deficiency on IBD and the possible benefits of vitamin D supplementation in IBD patients.
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