Document Type

Journal Article

Publication Title

European Journal of Nutrition

Publisher

Springer

School

School of Medical and Health Sciences

RAS ID

30872

Funders

Funding information available at https://doi.org/10.1007/s00394-019-02160-9

Grant Number

NHMRC Number : 1107474

Comments

This is a post-peer-review, pre-copyedit version of an article published in the European Journal of Nutrition. The final authenticated version is available online at: https://doi.org/10.1007/s00394-019-02160-9

Bondonno, N. P., Blekkenhorst, L. C., Bird, A. L., Lewis, J. R., Hodgson, J. M., Shivappa, N., ... & Lim, W. H. (2019). Dietary inflammatory index and the aging kidney in older women: a 10-year prospective cohort study. European Journal of Nutrition, 1-11.

Abstract

Purpose: Chronic inflammation plays a role in the pathogenesis of age-related renal disease and the diet can moderate systemic inflammation. The primary objective of this study was to examine the associations between a dietary inflammatory index ( DII®) score and renal function, the trajectory of renal function decline, and renal disease-related hospitalizations and/or mortality over 10 years. Methods: The study was conducted in 1422 Western Australian women without prevalent chronic kidney disease and aged ≥ 70 years. Baseline dietary data, obtained from a validated food frequency questionnaire, were used to calculate a DII score for each individual. Results: In this cohort, the mean [range] DII score was 0.19 [− 6.14 to 6.39]. A higher DII score was associated with poorer renal function at baseline and a greater renal function decline over 10 years; after multivariable adjustments, a one unit higher DII score was associated with a 0.55 mL/min/1.73 m2 lower eGFR at baseline (p = 0.01) and a 0.06 mL/min/1.73 m2 greater annual decline in eGFR over 10 years (p = 0.05). Restricted cubic splines provide evidence of a non-linear association between baseline DII score and risk of a renal disease-related event. Compared to participants in the lowest quintile, those in the highest quintile of DII score were at a higher risk of experiencing a renal disease-related event (adjusted HR 2.06, 95% CI 0.97, 4.37). Conclusion: Recommending an increased consumption of foods with a higher anti-inflammatory potential could form part of a multifaceted approach to reduce the risk of renal disease through diet and lifestyle changes.

DOI

10.1007/s00394-019-02160-9

Available for download on Thursday, December 31, 2020

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