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  • Title: Low Bone Mineral Density in Young Patients Newly Diagnosed with Inflammatory Bowel Disease.
    Author: Lee JS, Lee HS, Jang BI, Kim ES, Kim SK, Kim KO, Lee YJ, Lee HJ, Kim EY, Jung YJ, Yang CH, Crohn’s and Colitis Association in Daegu-Gyeongbuk (CCAiD).
    Journal: Dig Dis Sci; 2021 Feb; 66(2):605-611. PubMed ID: 32222926.
    Abstract:
    BACKGROUND: The prevalence and risk factors of low bone mineral density (BMD) in Asian patients newly diagnosed with inflammatory bowel disease (IBD) have not been fully suggested. AIMS: We aimed to examine the prevalence and risk factors of low BMD in young Korean patients newly diagnosed with IBD. METHODS: We prospectively enrolled 132 patients aged less than 50 years and newly diagnosed with IBD from six tertiary referral centers in Korea between November 2014 and April 2017. BMD was measured by dual-energy X-ray absorptiometry, and then the Z-score was determined. We defined low BMD as a Z-score ≤ - 1.0. RESULTS: Of 68 patients with ulcerative colitis (UC), 22 (32.4%) had low BMD. Also, of 64 patients with Crohn's disease (CD), 24 (37.5%) showed low BMD. Results from multivariate regression analysis identified the risk factors for low BMD as a high level of alkaline phosphatase (ALP) (≥ 140 U/L) (P = 0.010) in UC patients, and being underweight (body mass index ≤ 18.5 kg/m2) (P = 0.017) in CD patients. CONCLUSIONS: Our study showed that about one-third of newly diagnosed IBD Asian patients had low BMD. The clinical factors associated with low BMD were a high level of ALP in UC patients, and being underweight, in CD patients. Therefore, measurements of BMD in young patients should be considered at the diagnosis of IBD.
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