Dietary (Poly)phenols in the Management of Chronic Kidney Disease: A Narrative Review

Chronic kidney disease (CKD) affects over 850 million individuals globally and has no cure. The treatment of CKD centers on lifestyle interventions, including dietary changes, that slow disease progression. As emerging evidence suggests that fruit and vegetable-derived (poly)phenols may slow CKD, the goal of this narrative review is to synthesize current knowledge on the role of dietary (poly)phenols in CKD. To identify relevant articles, we searched databases including PubMed, Google Scholar, and Web of Science to identify relevant articles, using keywords including (poly)phenols, CKD, gut microbiome, and cardiovascular disease, among others. The relevant articles were synthesized into a summary of the evidence for (poly)phenols as a therapeutic strategy in CKD, though the paucity and heterogeneity of available research in this area precludes the identification of specific doses or types of (poly)phenols needed to slow CKD progression. The review is supplemented through our discussion of the gut microbiota and microbially derived metabolites as key targets in mediating the progression of CKD itself as well as subsequent cardiovascular outcomes. Finally, we discuss the integration of (poly)phenol-rich dietary patterns into CKD nutrition guidelines, highlighting future research directions to elucidate the potential therapeutic role of (poly)phenols in CKD.