Do vegetables and fruits reduce the risk of chronic obstructive pulmonary disease? A case–control study in Japan

Hirayama, Fumi; Lee, Andy H.; Binns, Colin; Zhao, Yun; Hiramatsu, Takuya; Tanikawa, Yoshimasa; Nishimura, Koichi; Taniguchi, Hiroyuki

doi:10.1016/j.ypmed.2009.06.010

Cited by 47 publications

(56 citation statements)

References 25 publications

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“…In their review, Boeing et al [20] also reported a preventive effect of COPD with increasing vegetable and fruit intake. In addition, in a case-control study from Japan, a significantly lower risk of COPD was observed with increasing total vegetable intake [21]. …”

Section: Introductionmentioning

confidence: 99%

Associations between Dietary Patterns and Post-Bronchodilation Lung Function in the SAPALDIA Cohort

et al. 2018

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Background: Chronic obstructive pulmonary disease (COPD) is not restricted to smokers. Dietary habits may contribute to the disease occurrence. Epidemiological studies point to a protective effect of fruit and vegetable intake against COPD. Objective: To investigate the associations between dietary patterns and parameters of lung function related to COPD in the Swiss Cohort Study on Air Pollution and Lung and Heart Diseases in Adults (SAPALDIA). Methods: Data were included from the second follow-up assessment of the SAPALDIA cohort in 2010–2011 using a food frequency questionnaire. Principal component factor analysis was used to derive dietary patterns, whose association with FEV1, FEV1/FVC, FEF2575, and COPD was investigated by applying multivariate regression analyses. Results: After adjustment for potential confounders, the “prudent dietary pattern” characterised by the predominant food groups vegetables, fruits, water, tea and coffee, fish, and nuts was positively associated with FEV1 (increase of 40 mL per SD, p < 0.001). Also for factor 3 (“high-carbohydrate diet”), we found a significant positive association with FEV1 (with an increase per SD of 36 mL, p = 0.006). Conclusions: The main results are consistent with a protective effect of a diet rich in fruits, vegetables, fish, and nuts against age-related chronic respiratory disease. If confirmed in prospective cohorts, our results may guide nutritional counselling towards respiratory health promotion.

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Section: Introductionmentioning

confidence: 99%

Associations between Dietary Patterns and Post-Bronchodilation Lung Function in the SAPALDIA Cohort

et al. 2018

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“…The beneficial effects of a diet rich in vegetables upon cardiovascular health [6], risk of morbidity and mortality [7], and COPD development [8,9] have been well described. These positive effects have, in part, been attributed to inorganic nitrate which is found in particularly high quantities in leafy green vegetables and some root vegetables such as beetroot [10].…”

Section: Introductionmentioning

confidence: 99%

The effect of dietary nitrate supplementation on the oxygen cost of cycling, walking performance and resting blood pressure in individuals with chronic obstructive pulmonary disease: A double blind placebo controlled, randomised control trial

et al. 2015

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“…In prospective cohorts, a significant reduction in the risk of COPD was observed with regular consumption of fruit but not vegetables [15][16][17][18]. Finally, a case-control study [19] found a significantly lower intake of vegetables and fruit in COPD patients than in controls. In another case-control study in smokers, a high consumption of vegetables and fruit (in particular apples) was associated with a COPD risk reduction [20].…”

Section: Fruit and Vegetablesmentioning

confidence: 89%

Healthy behaviours and COPD

Annesi‐Maesano

Roche

2014

Eur Respir Rev

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@ERSpublicationsHealthy behaviours (diet and activity) could have beneficial effects on the risk of COPD occurence or progression http://ow.ly/AhjNhIn this issue of the European Respiratory Review, YOUNG and HOPKINS [1] elegantly discuss how beans (an important part of the Hispanic diet) could reduce systemic inflammation and, thereby, the risk of chronic obstructive pulmonary disease (COPD) and lung cancer, explaining the risk imbalance between Hispanics, African-Americans and non-Hispanic whites. As appropriately acknowledged by the authors, what they propose is a hypothesis, warranting confirmation in specific observational and interventional studies. The purpose of this editorial is to discuss some important issues evoked in their reasoning, focusing on COPD only. Altogether, the main question is: is causal inference between bean intake and reduction in the risk of COPD occurrence possible from available data and, if not, what would be needed to progress, considering possible confounders?Assessing the causality of the link: back to basicsIn 1965, Sir Bradford Hill, an epidemiologist, proposed to consider the following criteria when assessing the causality of a relationship between two events/conditions [2]: 1) the strength of the association, as assessed by statistics (rate ratios, risk ratios and odds ratios); 2) consistency and repeatability of the association; 3) specificity of the relationship (one cause leads to one effect); 4) temporal relationship (the cause precedes the consequence); 5) presence of a dose-response relationship, i.e. greater exposure is associated with greater incidence of the effect; 6) biological plausibility; 7) coherence between epidemiological and biological/laboratory evidence; 8) experimental evidence; and 9) analogy with the effect of other, similar factors. Two other factors need to be considered: 1) the possible involvement of bias by confounding factors in the observed association(s) [3]; and 2) the specific issue of confirmation of observations by interventional approaches [4]. The need to consider the criteria of HILL [2] as a guide rather than as a definitive tool has been underlined previously, especially in the area of nutritional epidemiology [5]. Bearing these considerations in mind, what is the evidence linking diet and COPD occurrence, and how can other dietary components or non-dietary factors confound the possible link between bean consumption and COPD? Biological plausibilityIn COPD, the main dietary components that have attracted interest are fibre (mostly contained in fruits and vegetables, including beans), polyunsaturated fatty acids (PUFAs) and antioxidant micronutrients (vitamins A, C, D and E, and carotenes and flavonoids), as recently reviewed elsewhere [6,7]. These components are actually inter-related: for instance, fermentation of water-soluble fibres in the large intestine promotes the

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Do vegetables and fruits reduce the risk of chronic obstructive pulmonary disease? A case–control study in Japan

Cited by 47 publications

References 25 publications

Associations between Dietary Patterns and Post-Bronchodilation Lung Function in the SAPALDIA Cohort

Associations between Dietary Patterns and Post-Bronchodilation Lung Function in the SAPALDIA Cohort

The effect of dietary nitrate supplementation on the oxygen cost of cycling, walking performance and resting blood pressure in individuals with chronic obstructive pulmonary disease: A double blind placebo controlled, randomised control trial

Healthy behaviours and COPD

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