![]() ![]() In adults, overweight is defined as a BMI greater than 25 kg/m 2 and obesity greater than 30 kg/m 2. It is calculated as the ratio of weight in kilograms to the square of height in meters, expressed in units of kg/m 2. ģ. Body mass index and patterns of regional fat distributionīody mass index (BMI) is used to classify obesity. The prevalence of obesity among patients with COPD is also higher than among those without COPD. This implies that approximately 250,000 new cases of asthma per year in the United States are related to obesity. A meta-analysis involving over 300,000 adults found obesity and asthma were related, and the risk of asthma increased with increasing BMI : the odds ratio for incident asthma in the overweight group was 1.5 (95% CI 1.2–1.6) compared to normal weight subjects, whereas the odds ratio in the obese group was 1.9 (95% CI 1.4–2.6). ![]() This sudden rise in the prevalence of obesity has affected the epidemiology of many pulmonary diseases.Īsthma is one of the best-characterized diseases related to obesity. Children are not spared by the obesity epidemic – currently, about 19% of US children are obese. In the United States, approximately 40% of the adult population is obese. The prevalence of obesity has reached epidemic proportions, especially in developed countries. 2. Epidemiology of obesity and obesity-related lung disease ![]()
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