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Relationship between dietary patterns and COPD: a systematic review and meta-analysis

Michael K. Parvizian, Manreet Dhaliwal, Jeremy Li, Imran Satia, Om P. Kurmi
ERJ Open Research 2020 6: 00168-2019; DOI: 10.1183/23120541.00168-2019
Michael K. Parvizian
1Dept of Medicine, McMaster University, Hamilton, ON, Canada
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Manreet Dhaliwal
1Dept of Medicine, McMaster University, Hamilton, ON, Canada
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Jeremy Li
1Dept of Medicine, McMaster University, Hamilton, ON, Canada
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Imran Satia
2Dept of Medicine, Division of Respirology, McMaster University, Hamilton, ON, Canada
3Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
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Om P. Kurmi
2Dept of Medicine, Division of Respirology, McMaster University, Hamilton, ON, Canada
4Population Health Research Institute, McMaster University, Hamilton, ON, Canada
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Abstract

Background Findings from previous studies reporting on the associations between chronic obstructive pulmonary disease (COPD) and various dietary patterns have been inconsistent. This review aims to summarise the evidence on the strength of the association between dietary patterns and the prevalence and incidence of COPD.

Methods We conducted a comprehensive search of seven databases between 1 January 1980 and 30 November 2019. Two reviewers independently reviewed each manuscript through the screening, selection, data extraction and quality assessment stages. Data from eight observational studies that met the inclusion criteria were extracted and random-effects meta-analysis was subsequently conducted.

Results Eight observational studies (all eight reporting on healthy dietary patterns and three on unhealthy dietary patterns) met the inclusion criteria and data were extracted to include in the meta-analysis. Consumption of a healthy dietary pattern was associated with a lower risk of COPD (pooled OR 0.88, 95% CI 0.82–0.94). Consumption of unhealthy dietary patterns was associated with a higher risk of COPD (OR 1.22, 95% CI 0.84–1.76); however, the results were not statistically significant and had high heterogeneity (I2=91%).

Conclusion Our results suggests that healthy dietary patterns are associated with a lower prevalence of COPD, while unhealthy dietary patterns are not. More studies, particularly adequately powered longitudinal studies, are needed to further elucidate the effects of healthy and unhealthy dietary patterns on risk of COPD.

Abstract

This review suggests that individuals with healthy dietary pattern have lower risk of chronic obstructive pulmonary disease http://bit.ly/331PVJ1

Footnotes

  • This article has supplementary material available from openres.ersjournals.com

  • The protocol for this review is registered at https://www.crd.york.ac.uk/prospero/ with identifier number CRD42018094503.

  • Conflict of interest: M.K. Parvizian has nothing to disclose.

  • Conflict of interest: M. Dhaliwal has nothing to disclose.

  • Conflict of interest: J. Li has nothing to disclose.

  • Conflict of interest: I. Satia has nothing to disclose.

  • Conflict of interest: O.P. Kurmi has nothing to disclose.

  • Received July 2, 2019.
  • Accepted February 28, 2020.
  • Copyright ©ERS 2020
http://creativecommons.org/licenses/by-nc/4.0/

This article is open access and distributed under the terms of the Creative Commons Attribution Non-Commercial Licence 4.0.

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Relationship between dietary patterns and COPD: a systematic review and meta-analysis
Michael K. Parvizian, Manreet Dhaliwal, Jeremy Li, Imran Satia, Om P. Kurmi
ERJ Open Research Apr 2020, 6 (2) 00168-2019; DOI: 10.1183/23120541.00168-2019

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Relationship between dietary patterns and COPD: a systematic review and meta-analysis
Michael K. Parvizian, Manreet Dhaliwal, Jeremy Li, Imran Satia, Om P. Kurmi
ERJ Open Research Apr 2020, 6 (2) 00168-2019; DOI: 10.1183/23120541.00168-2019
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