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Diet's role in respiratory risks.

Diet's role in respiratory risks

People with asthma or chronic bronchitis may glean new dietary strategies for moderating their periodic respiratory distress based on the results of a study involving 9,074 adults aged 30 and older. As part of the Second National Health and Nutrition Examination Survey (NHANES II), conducted between 1976 and 1980, researchers asked volunteers to recall what they had eaten the day before. Scott T. Weiss at the Harvard Medical School in Boston and Joel Schwartz of the Environmental Protection Agency in Washington, D.C., have now analyzed the recalled food choices in light of the respondents' respiratory histories, as determined during NHANES II through medical exams and personal interviews.

In the July AMERICAN JOURNAL OF EPIDEMIOLOGY, Schwartz and Weiss report that diets low in vitamin C, fish or their zinc-to-copper ratio, as well as diets with a high sodium-to-potassium ratio, increased the risk of bronchitis and wheezing, regardless of a person's age, gender, smoking history or area of residence. Low niacin levels also correlated with a risk of wheezing. The new findings even suggest that "diet may play a role in the susceptibility of certain smokers to the development of [chronic bronchitis and emphysema]," they say.
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Title Annotation:asthma and bronchitis
Publication:Science News
Date:Aug 11, 1990
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