A cross-sectional study was done to find the association between OSA symptoms, poor sleep quality, and cognitive function in middle-aged and elderly urban populations; a total of 7505 adults were enrolled.

Out of the total study population (with MMSE >26),

OSA symptoms were negatively associated with cognitive domains of information processing, memory, and G-factor.

Poor sleep quality was also associated with lower cognitive scores for G-factor, memory, and executive domains, but not with the information domain.

Obstructive sleep apnea has been studied till now for its impact on quality of life and as a predisposing factor for many chronic illnesses.

The above study adds to the evidence of its impact on sleep quality and cognitive function in India.