Study Reinforces Correlation Between Antioxidants and Asthma
By Greg Arnold, DC, CSCS, May 18, 2006, abstracted from “Dietary antioxidants and asthma in adults�?in the May 2006 issue of Thorax
As a condition that affects more than 20 million Americans, including 6.1 million children,(1) asthma is recognized as “a major public health problem of increasing concern in the United States.�?As the third-ranking cause of hospitalization among those younger than 15 years of age, asthma costs $3.2 billion and accounts for 14 million lost school days each year.(2)
While environmental concerns, such as damp homes(3) and exposure to chemical-based cleaners(4) have been found to increase childhood asthma risk, asthma in adults has started to focus on consuming a western diet(5) and low antioxidant intake.(6) Now a new study(7) has started to reinforce this concept.
In the study, researchers gathered information from food diaries and compared antioxidant intake in 515 adults with diagnosed asthma to 515 healthy controls. Researchers found that over half of adults with asthma consumed no citrus fruits and that a high intake of citrus fruit (at least one citrus fruit per day) was “significantly associated with a [41%] reduced risk of asthma.�?Concerning individual antioxidants, researchers found that vitamin C and manganese “were inversely and independently associated with asthma.�?/FONT>
For the researchers, “asthma in adults is associated with a low dietary intake of (citrus) fruit, the antioxidant nutrients vitamin C and manganese�?and that “diet may be a potentially modifiable risk factor for the development of asthma.�?/FONT>
Greg Arnold is a Chiropractic Physician practicing in Danville, CA. You can contact Dr. Arnold directly by emailing him at mailto:[email protected] or visiting his website www.CompleteChiropracticHealthcare.com
Reference:
1 “Asthma�?posted on the American Lung Association Website ww.texaslung.org/educationalresources/factsheets/asthma.htm
2 CDC’s National Center for Environmental Health Website. “Asthma's Impact on Children and Adolescents�?www.cdc.gov/asthma/children.htm#asthma_control
3 Jaakkola, J. J., B. F. Hwang, et al. (2005). "Home dampness and molds, parental atopy, and asthma in childhood: a six-year population-based cohort study." Environ Health Perspect 113(3): 357-61
4 Sherriff, A., A. Farrow, et al. (2005). "Frequent use of chemical household products is associated with persistent wheezing in pre-school age children." Thorax 60(1): 45-9
5 Seaton A, Godden DJ, Brown K. Increase in asthma: a more toxic environment or a more susceptible population?Thorax 1994;49:171�?
6 Misso NL. Plasma concentrations of dietary and nondietary antioxidants are low in severe asthma. Eur Respir J. 2005 Aug;26(2):257-64
7 Patel BD. Dietary antioxidants and asthma in adults. Thorax, May 2006; 61; 388 - 393.
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