1 Department of Physiology and Pathophysiology, School of Bio-Medicine, Health Sciences University of Mongolia, Ulaanbaatar, Mongolia
2 Department of Epidemiology and Biostatistics, School of Public Health, Health Sciences University of Mongolia, Ulaanbaatar, Mongolia
3 Collaborating Centre for Prevention and Control of Chronic Respiratory Disease, Dokkyo Medical University, Tochigi, Japan
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Obesity and asthma are two important public health problems in the worldwide. Over the last two decades, there has been a significant increasing in the prevalence of asthma and obesity in different parts of the world. The aim of this study was to investigate the association between bronchial asthma and body mass index. The height and weight of all subjects were measured by standard methods. Body mass index (BMI) was calculated by dividing the weight in kilograms by the square of the height in meters (kg/m2). We interviewed subjects using a questionnaire developed on the basis of WHO Protocol for Assessment of Prevalence of Major Respiratory Diseases and modified by local risk factors assessment and by other international survey approach including Global Initiative for Asthma (GINA) (9) and European Community Respiratory Health Survey (ECRHS). The questionnaires included 79 questions with 11 different groups. We randomly chose 1201 adults. Of the respondents, 606 were males (50.5%) and 595 were females (49.5%). 3.8% (n=46) out of all subjects were classified as underweight, 49.1% (n=590) were classified as normal weight, 30.2% (n=363) were classified as overweight and 16.8% (n=202) were classified as obese. The prevalence of wheezing was higher in overweight and obese subjects than in those of a normal weight. The BMI was higher in the group with wheezing than in the group without wheezing (p<0.01). The prevalence of physician-diagnosed asthma was higher in obese subjects than in normal weight subjects (p<0.01).This study suggests that BMI is associated with bronchial asthma in adults.
