Association between dietary fiber intake and chronic kidney disease in adults with and without hypertension in the United States: a cross-sectional study of NHANES 2009–2020

While previous research has highlighted the potential advantages of increasing dietary fiber intake (DFI) for managing hypertension and chronic kidney disease (CKD), there is a gap in large-scale empirical studies examining the relationship between DFI and CKD among hypertensive and nonhypertensive cohorts independently. This study involved 22,871 participants sourced from the NHANES database spanning 2009 to 2020, who were divided into hypertensive (n = 9,861) and nonhypertensive (n = 13,010) groups. The analysis revealed a significant inverse correlation between DFI and CKD prevalence across the sample after adjusting for various covariates (OR = 0.98, 95% CI: 0.97–0.99, p = 0.001). Within the subset of hypertensive individuals, this inverse association mirrors the findings of the overall sample, indicating that a higher DFI was associated with a reduced occurrence of CKD (OR = 0.97, 95% CI: 0.96–0.99, p

既往研究已凸显增加膳食纤维摄入量（DFI）在管理高血压和慢性肾脏病（CKD）方面的潜在益处，然而，在独立考察膳食纤维摄入量与CKD之间关系的大型实证研究方面尚存在空白。本研究纳入了来自2009年至2020年NHANES数据库的22,871名参与者，他们被分为高血压组（n=9,861）和非高血压组（n=13,010）。经调整多种协变量后，分析结果显示样本中膳食纤维摄入量与CKD患病率之间存在显著负相关关系（OR=0.98，95%CI: 0.97–0.99，p=0.001）。在高血压个体子集中，此负相关性同总体样本的发现一致，表明较高的膳食纤维摄入量与CKD发生的减少相关联（OR=0.97，95%CI: 0.96–0.99，p= ...）