alexa Pesticides and atopic and nonatopic asthma among farm women in the Agricultural Health Study.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

Author(s): Hoppin JA, Umbach DM, London SJ, Henneberger PK, Kullman GJ,

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Abstract RATIONALE: Risk factors for asthma among farm women are understudied. OBJECTIVES: We evaluated pesticide and other occupational exposures as risk factors for adult-onset asthma. METHODS: Studying 25,814 farm women in the Agricultural Health Study, we used self-reported history of doctor-diagnosed asthma with or without eczema and/or hay fever to create two case groups: patients with atopic asthma and those with nonatopic asthma. We assessed disease-exposure associations with polytomous logistic regression. MEASUREMENTS AND MAIN RESULTS: At enrollment (1993-1997), 702 women (2.7\%) reported a doctor's diagnosis of asthma after age 19 years (282 atopic, 420 nonatopic). Growing up on a farm (61\% of all farm women) was protective for atopic asthma (odds ratio [OR], 0.55; 95\% confidence interval [CI], 0.43-0.70) and, to a lesser extent, for nonatopic asthma (OR, 0.83; 95\%CI, 0.68-1.02; P value for difference = 0.008). Pesticide use was almost exclusively associated with atopic asthma. Any use of pesticides on the farm was associated only with atopic asthma (OR, 1.46; 95\% CI, 1.14-1.87). This association with pesticides was strongest among women who had grown up on a farm. Women who grew up on farms and did not apply pesticides had the lowest overall risk of atopic asthma (OR, 0.41; 95\% CI, 0.27-0.62) compared with women who neither grew up on farms nor applied pesticides. A total of 7 of 16 insecticides, 2 of 11 herbicides, and 1 of 4 fungicides were significantly associated with atopic asthma; only permethrin use on crops was associated with nonatopic asthma. CONCLUSIONS: These findings suggest that pesticides may contribute to atopic asthma, but not nonatopic asthma, among farm women.
This article was published in Am J Respir Crit Care Med and referenced in Journal of Antivirals & Antiretrovirals

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