Abstract Title:

Dietary Fiber Intake and Risk of Chronic Obstructive Pulmonary Disease: A Prospective Cohort Study of Men.

Abstract Source:

Epidemiology. 2017 Sep 7. Epub 2017 Sep 7. PMID: 28901975

Abstract Author(s):

Joanna Kaluza, Holly Harris, Alice Wallin, Anders Linden, Alicja Wolk

Article Affiliation:

Joanna Kaluza


BACKGROUND: The limited literature suggests that dietary fiber intake from whole grains, fruits, and vegetables is negatively associated with chronic obstructive pulmonary disease (COPD) via fiber's anti-inflammatory properties. Therefore, we investigated the association between total fiber and fiber sources and risk of COPD in the population-based prospective Cohort of Swedish Men (45,058 men, aged 45-79 years) with no history of COPD at baseline.

METHODS: Dietary fiber intake was assessed with a self-administered questionnaire in 1997 and was energy-adjusted using the residual method. Cox proportional hazard regression models were used to estimate hazard ratios (HRs) with 95% confidence intervals (95% CIs) adjusted for potential confounders.

RESULTS: During a mean follow-up of 13.1 years (1998-2012), 1,982 incident cases of COPD were ascertained via linkage to the Swedish health registers. A strong inverse association between total fiber intake (≥36.8 vs.<23.7 g/day) and COPD was observed in current smokers (hazard ratio [HR]=0.54; 95% confidence interval [CI]=0.43-0.67) and ex-smokers (HR=0.62, 95%CI=0.50-0.78) but not in never smokers (HR=0.93; 95%CI=0.60-1.45;P-interaction=0.04). For cereal fiber, HRs for highest vs. lowest quintile were 0.62 (95%CI=0.51-0.77,P-trend<0.001) in current smokers and 0.66 (95%CI=0.52-0.82,P-trend<0.001) in ex-smokers; for fruit fiber the HR was 0.65 (95%CI=0.52-0.81,P-trend<0.001) in current smokers and 0.77 (95%CI=0.61-0.98,P-trend=0.17) in ex-smokers; for vegetable fiber it was 0.71 (95%CI=0.57-0.88,P-trend=0.003) in current smokers and 0.92 (95%CI=0.71-1.19,P-trend=0.48) in ex-smokers.

CONCLUSION: Our findings indicate that high fiber intake was inversely associated with COPD incidence in men who are current or ex-smokers.

Study Type : Human Study

Print Options

Key Research Topics

Sayer Ji
Founder of GreenMedInfo.com

Subscribe to our informative Newsletter & get Nature's Evidence-Based Pharmacy

Our newsletter serves 500,000 with essential news, research & healthy tips, daily.

Download Now

500+ pages of Natural Medicine Alternatives and Information.

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2020 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.