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Van Sickle says that rates of gucci outlet asthma reflect both the diagnostic habits of physicians and the differences in the actual frequency of disease. The origins of asthma have been tied to a host of risk factors, ranging from genes, allergy, viral infections and environmental conditions such as smoky fires. "It's considered a 'multifactorial' disease, but I think that's another way of saying we can't fully explain the prevalence patterns or time trends," he says.

A better understanding of the causes of the disease should emerge from better data about those with asthma and on under circumstances they develop asthma, Van Sickle says.

"Important differences in the incidence of asthma are built into different ways of life — such as diet, environmental exposures and clinical practices — and anthropology should be able to help us understand how to prevent and treat this disease," he says. "I hope that my work can help make sense of the origins of asthma and the sizable differences in the rates of asthma across populations. Behavior and culture play major roles in the causation and treatment of many diseases, and anthropology is the study of culture and behavior."