Dietary Fiber Intake Was Inversely Associated with All-Cause Mortality but Not with Cancer and Cardiovascular Disease Mortalities in the US.

IF 3 Q2 MEDICINE, RESEARCH & EXPERIMENTAL
Zoha Akbar, Sundus Fituri, Zumin Shi, Vijay Ganji
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Abstract

Background: Evidence linking dietary fiber intake with cancer risk and mortality is equivocal.

Objective: We investigated the relationship between dietary fiber intake and all-cause, cancer, and cardiovascular disease (CVD) mortalities in US adults ≥ 20 years.

Methods: Data from the National Health and Nutrition Examination Surveys (NHANES) from 2003 to 2016 were used. Seven two-year cycles were concatenated into one analytic data file, NHANES 2003-2016 (n = 25,868; age ≥ 20 years). Dietary fiber intakes were collected from one 24-h dietary recall. Fiber intakes were categorized into quartiles. Mortality information was obtained from data linkage. To determine mortality, subjects were followed up for 6.4 years. Association between dietary fiber and mortality from all causes, cancer, and CVD was determined with multivariable-adjusted Cox proportional hazards models. Multivariate-adjusted Cox proportional hazard regression was used to generate mortality survival rates.

Results: During the follow-up period, out of 2520 deaths, 561 and 511 deaths were from cancer and CVD, respectively. Dietary fiber intake was inversely associated with all-cause mortality [RR (95% CI), 0.67 (0.56-0.80); p ≤ 0.001]. No relationship was observed between fiber intake and cancer mortality [RR (95% CI), 0.8 (0.55-1.17); p = 0.51] and CVD mortality [RR (95% CI), 0.84 (0.53-1.33); p = 0.67].

Conclusions: In the US population, dietary fiber intake was associated with decreased all-cause mortality, but not with cancer and CVD mortality.

Abstract Image

在美国,膳食纤维摄入量与全因死亡率呈负相关,但与癌症和心血管疾病死亡率无关。
背景:膳食纤维摄入量与癌症风险和死亡率之间的联系尚不明确。目的:研究美国≥20岁成人膳食纤维摄入量与全因、癌症和心血管疾病(CVD)死亡率之间的关系。方法:采用2003 - 2016年国家健康与营养检查调查(NHANES)数据。7个2年周期被合并成一个分析数据文件,NHANES 2003-2016 (n = 25,868,年龄≥20岁)。在一次24小时膳食召回中收集膳食纤维摄入量。纤维摄入量被分成四分位数。通过数据链接获得死亡率信息。为了确定死亡率,研究对象被随访了6.4年。通过多变量校正Cox比例风险模型确定膳食纤维与全因死亡率、癌症死亡率和心血管疾病死亡率之间的关系。采用多变量校正Cox比例风险回归计算死亡率和生存率。结果:在随访期间,2520例死亡中,分别有561例和511例死于癌症和心血管疾病。膳食纤维摄入量与全因死亡率呈负相关[RR (95% CI), 0.67 (0.56-0.80);P≤0.001]。纤维摄入量与癌症死亡率之间没有关系[RR (95% CI), 0.8 (0.55-1.17);p = 0.51]和心血管疾病死亡率[RR (95% CI), 0.84 (0.53-1.33);P = 0.67]。结论:在美国人群中,膳食纤维摄入量与全因死亡率降低有关,但与癌症和心血管疾病死亡率无关。
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