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The prevalence of obstructive sleep apnea (OSA) is rising, and its relevance to cardiovascular and other clinical outcomes is receiving attention. In a study of more than 250 people (mean body-mass index, 37 kg/m2) with OSA (mean apnea-hypopnea index [AHI], 23 events/hour) and type 2 diabetes, researchers assessed whether weight loss affected OSA. Participants were randomized to an intensive weight-reduction program or to three sessions of training on diabetes management (controls).
At 1 year, the weight-reduction group had lost significantly more weight (mean, 10.8 vs. 0.6 kg) and exhibited a significantly decreased AHI (mean, 10 fewer events/hour than at baseline) compared with the control group. In addition, more people in the weight-redu…