An HCP Live report discusses a study that demonstrated that CPAP use promoted an increase in BMI as well as weight.

An extensive review of the medical literature identified 25 randomized controlled trials covering over 3,000 patients.  All of the included studies had a population that included mainly overweight and obese patients.  Of significance is that the vast majority of excluded studies did not specifically identify outcomes with regards to body weight and BMI, and most studies that were included in this meta-analysis compared CPAP to no treatment for obstructive sleep apnea.

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