ArticleBMC public health2025
Associations between the dietary inflammatory index, body mass index, and waist-to-height ratio and diagnosed and undiagnosed diabetes mellitus in adults in Guangxi, China.
Article in BMC public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe relationships between the dietary inflammatory index (DII), body mass index (BMI), and waist‒to-hip ratio (WtHR) and both diagnosed diabetes mellitus (DDM) and undiagnosed diabetes mellitus (UDDM), as well as the contributions of these factors, have not yet been comprehensively evaluated. This study aimed to investigate this association and elucidate the roles of DII, BMI, and the WtHR in the development of diabetes.
methodsThis was a cross-sectional study involving 3687 participants aged 18 to 69 years were selected from the China National Nutrition and Health Survey (CNNHS 2010 to 2013) and the China Adult Chronic Disease and Nutrition Surveillance (CACDNS 2015) in Guangxi. DII scores were calculated from a 3-day, 24-hour (3d 24 h) dietary survey combined with the weighing method. Unconditional logistic regression, restricted cubic spline (RCS), and weighted quantile sum (WQS) models were utilized to assess the associations between DII, BMI, WtHR, and both DDM and UDDM.
resultsThe overall prevalence of TDM was 6.6%, comprising 40.6% DDM and 59.4% UDDM cases. Compared with Q1 (the lowest proinflammatory group), subjects in Q4 and Q5 exhibited significantly higher TDM risk, with ORs (95% CI) of 1.65 (1.06, 2.56) and 1.88 (1.21, 2.92), respectively. This association was particularly pronounced in UDDM, where a significant dose-response relationship emerged (P-trend = 0.006), with Q5 demonstrating the highest diabetes risk which OR (95% CI) was 1.98 (1.16, 3.40). DII scores and the risks of TDM and UDDM were linear (all P values < 0.05) but no association between the DII and DDM risk. There is a nonlinear relationship between BMI and DDM risk, a linear relationship with UDDM risk, and significant positive correlations between the WtHR and both DDM and UDDM risk. WtHR emerged as the primary contributor (weight = 0.69) in participants with DDM. For participants with UDDM, DII emerged as the primary determinant, outweighing BMI (weight = 0.37 vs. 0.35) and the WtHR (weight = 0.28).
conclusionsA high-proinflammatory diet is significantly linked to increased risks of both DDM and UDDM. BMI and the WtHR also exert substantial yet differential influences.
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