ABSTRACT
Objective:To evaluate the relationship between inflammatory bowel disease (IBD) and diabetes mellitus.Methods:The database of PubMed, EMBASE and Cochrane were searched by computer, and the related studies on the relationship between IBD and diabetes were collected. The retrieval time was from the database establishment to November 2, 2019. The heterogeneity analysis was conducted by Cochran Q test and I2 value. The relative risk ( RR) and 95% confidence interval ( CI) were used as the research indexes to conduct Meta analysis. Sensitivity analysis and publication bias test were also carried out. Results:Twelve observational studies were included in the study, and 216 024 IBD patients were included. Meta analysis showed that there was a significant correlation between IBD and diabetes ( RR = 1.27, 95% CI 1.09 - 1.49), and the risk of diabetes in IBD patients was 1.27 times higher than that of the general population. The results of subgroup analysis showed that: compared with the general population, the risk of type 2 diabetes mellitus (T2DM) in patients with ulcerative colitis (UC) increased ( RR = 1.44, 95% CI 1.25 -1.66), while the risk of type 1 diabetes mellitus (T1DM) had no significant difference. Compared with the general population, the risk of T1DM and T2DM in patients with Crohn′s disease (CD) both increased (T1DM: RR = 1.34, 95% CI 1.05 - 1.71; T2DM: RR = 1.44, 95% CI 1.01 - 2.07). Conclusions:There is a relationship between IBD and diabetes mellitus, and the risk of diabetes is increased in IBD patients.