The relationship between dietary fiber intake and lung function in the national health and nutrition examination surveys

Corrine K Hanson, Elizabeth Lyden, Stephen Rennard, David M. Mannino, Erica P A Rutten, Raewyn Hopkins, Robert Young

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Rationale: Extensive research supports a protective effect of a high-fiber diet in certain disease states; however, little is known about its relationship to lung health. The National Health and Nutrition Examination Surveys (NHANES) contain spirometry measures and dietary intake information, allowing us to assess this relationship. Objective: Determine the association between fiber intake and measures of lung function in a representative sample of U.S. adults. Methods: Participants included 1,921 adults who had spirometry measurements and fiber intake available. The primary outcomes were lung function measurements, including FEV1, FVC, and percent predicted FEV1 and FVC. We also conducted a categorical analysis of fiber intake and airflow restriction and obstruction based on Global Initiative for Chronic Obstructive Lung Disease and Spirometry Grade (SG) classifications. Multivariable regression models were used to look at the association of lung function measurements with dietary fiber intake after adjustment for relevant confounders. All analyses accounted for the weighted data and complex design of the NHANES sample. Measurements and Main Results: Subjects in the highest quartile intake of fiber had mean FEV1 and FVC measurements that were 82 ml and 129 ml higher than the lowest quartile of intake (P = 0.05 and 0.01, respectively), and mean percent predicted FEV1 and FVC values that were 2.4 and 2.8 percentage points higher (P = 0.07 and 0.02, respectively). In the categorical analysis, higher fiber intake was associated with a higher percentage of those with normal lung function (P = 0.001) and a significant decline in the proportion of participants with airflow restriction (P = 0.001). Conclusion: Low fiber intake was associated with reduced measures of lung function. A diet rich in fiber-containing foods may play a role in improving lung health.

Original languageEnglish (US)
Pages (from-to)643-650
Number of pages8
JournalAnnals of the American Thoracic Society
Volume13
Issue number5
DOIs
StatePublished - May 2016

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Nutrition Surveys
Dietary Fiber
Lung
Spirometry
Diet
Health
Chronic Obstructive Pulmonary Disease
Food
Research

Keywords

  • Diet
  • Fiber
  • Lung function
  • Obstructive lung disease
  • Restrictive lung disease

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

Cite this

The relationship between dietary fiber intake and lung function in the national health and nutrition examination surveys. / Hanson, Corrine K; Lyden, Elizabeth; Rennard, Stephen; Mannino, David M.; Rutten, Erica P A; Hopkins, Raewyn; Young, Robert.

In: Annals of the American Thoracic Society, Vol. 13, No. 5, 05.2016, p. 643-650.

Research output: Contribution to journalArticle

Hanson, Corrine K ; Lyden, Elizabeth ; Rennard, Stephen ; Mannino, David M. ; Rutten, Erica P A ; Hopkins, Raewyn ; Young, Robert. / The relationship between dietary fiber intake and lung function in the national health and nutrition examination surveys. In: Annals of the American Thoracic Society. 2016 ; Vol. 13, No. 5. pp. 643-650.
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