Dietary antioxidants and asthma in adults: population-based case-control study
Dietary antioxidants and asthma in adults: population-based case-control study
A protective role for dietary antioxidants in asthma has been proposed. However, epidemiological evidence to implicate antioxidant vitamins is weak, and data on the role of flavonoid-rich foods and antioxidant trace elements are lacking. We carried out a population-based case-control study in South London, UK, to investigate whether asthma is less common and less severe in adults who consume more dietary antioxidants. Participants were aged 16-50 yr and registered with 40 general practices. Asthma was defined by positive responses to a standard screening questionnaire in 1996, and complete information about usual diet was obtained by food frequency questionnaire from 607 cases and 864 controls in 1997. After controlling for potential confounding factors and total energy intake, apple consumption was negatively associated with asthma (odds ratio [OR] per increase in frequency group 0.89 [95% confidence interval [CI]: 0.82 to 0.97]; p = 0.006). Intake of selenium was also negatively associated with asthma (OR per quintile increase 0.84 [0.75 to 0.94]; p = 0.002). Red wine intake was negatively associated with asthma severity. The associations between apple and red wine consumption and asthma may indicate a protective effect of flavonoids. The findings for dietary selenium could have implications for health policy in Britain where intake has been declining.
antioxidants, adult asthma, diet, selenium, apples
1823-1828
Shaheen, Seif O.
42e3b3fc-c70c-49e7-8c88-64f2606129ec
Sterne, Jonathan A.C.
3dc2fb32-f2c7-4035-9fd1-a9112458b38e
Thompson, Rachel L.
1a394a6d-b006-4aec-b9be-b3e6c16fdb7b
Songhurst, Christina E.
e18b8cb8-f2b4-4d2a-b50d-29703ed0b342
Margetts, Barrie M.
d415f4a1-d572-4ebc-be25-f54886cb4788
Burney, Peter G.
e0714ebc-ea22-4249-ac69-872553df1ddf
2001
Shaheen, Seif O.
42e3b3fc-c70c-49e7-8c88-64f2606129ec
Sterne, Jonathan A.C.
3dc2fb32-f2c7-4035-9fd1-a9112458b38e
Thompson, Rachel L.
1a394a6d-b006-4aec-b9be-b3e6c16fdb7b
Songhurst, Christina E.
e18b8cb8-f2b4-4d2a-b50d-29703ed0b342
Margetts, Barrie M.
d415f4a1-d572-4ebc-be25-f54886cb4788
Burney, Peter G.
e0714ebc-ea22-4249-ac69-872553df1ddf
Shaheen, Seif O., Sterne, Jonathan A.C., Thompson, Rachel L., Songhurst, Christina E., Margetts, Barrie M. and Burney, Peter G.
(2001)
Dietary antioxidants and asthma in adults: population-based case-control study.
American Journal of Respiratory and Critical Care Medicine, 164 (10), .
(doi:10.1164/rccm2104061).
Abstract
A protective role for dietary antioxidants in asthma has been proposed. However, epidemiological evidence to implicate antioxidant vitamins is weak, and data on the role of flavonoid-rich foods and antioxidant trace elements are lacking. We carried out a population-based case-control study in South London, UK, to investigate whether asthma is less common and less severe in adults who consume more dietary antioxidants. Participants were aged 16-50 yr and registered with 40 general practices. Asthma was defined by positive responses to a standard screening questionnaire in 1996, and complete information about usual diet was obtained by food frequency questionnaire from 607 cases and 864 controls in 1997. After controlling for potential confounding factors and total energy intake, apple consumption was negatively associated with asthma (odds ratio [OR] per increase in frequency group 0.89 [95% confidence interval [CI]: 0.82 to 0.97]; p = 0.006). Intake of selenium was also negatively associated with asthma (OR per quintile increase 0.84 [0.75 to 0.94]; p = 0.002). Red wine intake was negatively associated with asthma severity. The associations between apple and red wine consumption and asthma may indicate a protective effect of flavonoids. The findings for dietary selenium could have implications for health policy in Britain where intake has been declining.
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Published date: 2001
Keywords:
antioxidants, adult asthma, diet, selenium, apples
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Local EPrints ID: 25977
URI: http://eprints.soton.ac.uk/id/eprint/25977
ISSN: 1073-449X
PURE UUID: 778313e8-afed-4651-a555-8fcb5304b54e
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Date deposited: 24 Apr 2006
Last modified: 15 Mar 2024 07:06
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Author:
Seif O. Shaheen
Author:
Jonathan A.C. Sterne
Author:
Rachel L. Thompson
Author:
Christina E. Songhurst
Author:
Peter G. Burney
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