Kim BJ, et al. - Among 82 obstructive sleep apnea (OSA) patients with obesity (BMI ≥ 25), researchers assessed the sleep quality and identified the parameters most related to sleep quality. Study participants were divided into two groups based on the Pittsburg Sleep Questionnaire Index (PSQI): patients with good sleep quality (PSQI ≤ 5, good sleepers) and those with poor sleep quality (PSQI > 5, poor sleepers). They also registered patients with OSA without obesity as a disease control group. Investigators discovered the poor sleepers' BMI to be significantly higher than the good sleepers' BMI, while the good sleepers' N-stage sleep ratio was higher than poor sleepers. According to findings, approximately two-thirds of OSA patients with obesity demonstrate poor sleep quality. These patients' sleep quality was more impacted by obesity severity, but not by OSA severity. In OSA patients with obesity, therefore, weight loss was advised to improve sleep quality and OSA severity.