Dietary and lifestyle inflammatory scores and risk of incident diabetes: a prospective cohort among participants of Tehran lipid and glucose study

Teymoori, F. and Farhadnejad, H. and Mokhtari, E. and Sohouli, M.H. and Moslehi, N. and Mirmiran, P. and Azizi, F. (2021) Dietary and lifestyle inflammatory scores and risk of incident diabetes: a prospective cohort among participants of Tehran lipid and glucose study. BMC Public Health, 21 (1).

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Abstract

Background: Inflammation is a precursor of chronic disease, which is affected by lifestyle and dietary habits. Recently empirical dietary inflammatory patterns (EDIP), dietary inflammation scores (DIS), and lifestyle inflammation scores (LIS) were developed to indicate lifestyle and dietary contributions in systemic inflammation. The current study aimed to investigate the associations between these indices and the incidence of diabetes among Tehranian adults. Methods: A total of 4624 individuals, aged 20�75 years, who were free of diabetes at baseline (2008�2011), were followed for 5.71 years (2014�2017) to ascertain incident diabetes. Dietary intakes were collected at baseline using the food frequency questionnaire. The hazard ratio (HR) of diabetes was calculated by Cox proportional hazards regression across quartiles of EDIP, DIS, and LIS, adjusted for potential confounders. Results: The mean ± SD for the age and BMI of the study population (45.1 male) were 40.8 ± 12.7 years and 27.1 ± 4.1 Kg.m2, respectively. At the end of the follow-up, 329 (7.1) diabetes cases were identified. In the multivariable-adjusted model, individuals in the highest compared to the lowest quartile of EDIP (HR = 0.83; 95CI:0.59�1.15, p for trend = 0.286), and LIS (HR = 2.41; 95CI:1.61�3.60, P for trend < 0.001) had increased risk of diabetes. However, no significant associations were found between the score of DIS and diabetes incidents (HR = 0.83; 95CI:0.59�1.15, p for trend = 0.286). Conclusion: Greater adherence to EDIP and LIS scores was associated with a higher risk of diabetes, while no significant association was found between the DIS score and diabetes incident. © 2021, The Author(s).

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