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Non Allergic Asthma Research Paper

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There are so many contributing factors to the incidence of asthma in the United State. Some of the factors are viral infection, cockroaches, dust mites, pollens, animal dander and molds. People can get asthma from passive and active smoking. Also environmental factors are a main contributor to asthma and allergies. Non-allergic asthma is caused by exercise, stress, and diet.

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