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Am J Epidemiol. 2004 Feb 15;159(4):351-7. Related Articles, Links
Serum vitamin levels and the risk of asthma in children.
Harik-Khan RI, Muller DC, Wise RA.
Clinical Research Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD.
Dietary intake, especially of antioxidant vitamins A, C, E, and the carotenoids, has been linked
with the presence and severity of asthma. From the Third National Health and Nutrition Examination
Survey (NHANES III), conducted in the United States between 1988 and 1994, the authors selected
4,093 children (aged 6-17 years) for whom relevant medical, socioeconomic, and anthropometric data
were complete. The children were 50.6% female, and 9.7% reported a diagnosis of asthma. Bivariate
analyses showed that asthma diagnosis was associated with lower levels of serum vitamin C, alpha-
carotene, beta-carotene, and beta-cryptoxanthin. However, antioxidant levels may be surrogate
markers for socioeconomic variables such as race, poverty, tobacco exposure, or general nutritional
status. In logistic models that included age, body mass index, socioeconomic variables, antioxidant
levels, parental asthma, and household smoking, the only antioxidants significantly associated with
asthma were vitamin C (odds ratio = 0.72 per mg/dl, 95% confidence interval = 0.55, 0.95) and alpha-
carotene (odds ratio = 0.95 per micro g/dl, 95% confidence interval = .90, 0.99). The odds ratio for
asthma in the highest quintile of serum vitamin C relative to the lowest was 0.65 (p < 0.05),
whereas it was 0.74 for alpha-carotene (p = 0.066). The authors concluded that low vitamin C and alpha-
carotene intakes are associated with asthma risk in children.
PMID: 14769638 [PubMed - in process]
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http://pages.ivillage.com/ironjustice/manisaherbivore DEAD PEOPLE WALKING
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Serum vitamin levels and the risk of asthma in children.
Harik-Khan RI, Muller DC, Wise RA.
Clinical Research Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD.
Dietary intake, especially of antioxidant vitamins A, C, E, and the carotenoids, has been linked
with the presence and severity of asthma. From the Third National Health and Nutrition Examination
Survey (NHANES III), conducted in the United States between 1988 and 1994, the authors selected
4,093 children (aged 6-17 years) for whom relevant medical, socioeconomic, and anthropometric data
were complete. The children were 50.6% female, and 9.7% reported a diagnosis of asthma. Bivariate
analyses showed that asthma diagnosis was associated with lower levels of serum vitamin C, alpha-
carotene, beta-carotene, and beta-cryptoxanthin. However, antioxidant levels may be surrogate
markers for socioeconomic variables such as race, poverty, tobacco exposure, or general nutritional
status. In logistic models that included age, body mass index, socioeconomic variables, antioxidant
levels, parental asthma, and household smoking, the only antioxidants significantly associated with
asthma were vitamin C (odds ratio = 0.72 per mg/dl, 95% confidence interval = 0.55, 0.95) and alpha-
carotene (odds ratio = 0.95 per micro g/dl, 95% confidence interval = .90, 0.99). The odds ratio for
asthma in the highest quintile of serum vitamin C relative to the lowest was 0.65 (p < 0.05),
whereas it was 0.74 for alpha-carotene (p = 0.066). The authors concluded that low vitamin C and alpha-
carotene intakes are associated with asthma risk in children.
PMID: 14769638 [PubMed - in process]
--------------------------------------------------------------------------
------
Who loves ya. Tom Jesus Was A Vegetarian! http://jesuswasavegetarian.7h.com Man Is A Herbivore!
http://pages.ivillage.com/ironjustice/manisaherbivore DEAD PEOPLE WALKING
http://pages.ivillage.com/ironjustice/deadpeoplewalking