In patients with obstructive sleep apnea, increased body mass index (BMI) appears to be associated with incidence of asthma, according to researchers from Washington State. Researchers collected data on 1258 patients who were diagnosed with obstructive sleep apnea. As part of their initial evaluation, these patients completed a questionnaire about a previous diagnosis of asthma. According to the data, the percentage of patients who reported a history of asthma increases as BMI increases. Asthma was positively linked with the presence of heartburn (reflux). It appears, he said, that as BMI increases, reflux increases, and many studies have documented a connection between reflux and asthma.
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