Sleep apnea patients over 65 who were adherent to their CPAP therapy for at least four hours a night had improved cognitive function after one year compared to non-adherent patients, according to research in the Journal of the American Geriatrics Society.

Researchers found that after 1 year, those adhering to their CPAP therapy had statistically significant improvements in psychomotor/cognitive processing speed versus those who did not.

Those adhering to their CPAP therapy also had small to moderate positive changes in daytime sleepiness, everyday function and memory.