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Fruit and vegetable consumption and risk of COPD: a prospective cohort study of men.
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2017 (English)In: Thorax, ISSN 0040-6376, E-ISSN 1468-3296, Vol. 72, no 6, p. 500-509Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Antioxidants present in fruits and vegetables may protect the lung from oxidative damage and prevent COPD.

AIMS: To determine the association between fruit and vegetable consumption and risk of COPD by smoking status in men.

METHODS: The population-based prospective Cohort of Swedish Men included 44 335 men, aged 45-79 years, with no history of COPD at baseline. Fruit and vegetable consumption was assessed with a self-administered questionnaire.

RESULTS: During a mean follow-up of 13.2 years, 1918 incident cases of COPD were ascertained. A strong inverse association between total fruit and vegetable consumption and COPD was observed in smokers but not in never-smokers (p-interaction=0.02). The age-standardised incidence rate per 100 000 person-years in the lowest quintile (<2 servings/day) of total fruit and vegetable consumption was 1166 in current smokers and 506 in ex-smokers; among those in the highest quintile (≥5.3 servings/day), 546 and 255 per 100 000 person-years, respectively. The multivariable HR of COPD comparing extreme quintiles of total fruit and vegetable consumption was 0.60 (95% CI 0.47 to 0.76, p-trend <0.0001) in current smokers and 0.66 (95% CI 0.51 to 0.85, p-trend=0.001) in ex-smokers. Each one serving per day increment in total fruit and vegetable consumption decreased risk of COPD significantly by 8% (95% CI 4% to 11%) in current smokers and by 4% (95% CI 0% to 7%) in ex-smokers.

CONCLUSIONS: These results indicate that high consumption of fruits and vegetables is associated with reduced COPD incidence in both current and ex-smokers but not in never-smokers.

Place, publisher, year, edition, pages
2017. Vol. 72, no 6, p. 500-509
Keywords [en]
COPD epidemiology
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-337256DOI: 10.1136/thoraxjnl-2015-207851PubMedID: 28228486OAI: oai:DiVA.org:uu-337256DiVA, id: diva2:1168691
Available from: 2017-12-21 Created: 2017-12-21 Last updated: 2017-12-21

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