Decoding Sleep’s Role in Cognitive Health and Dementia Risk: Insights from the Sleep and Dementia Consortium

Highlight

• Identification of nine distinct sleep composites capturing varied aspects of sleep architecture and quality through comprehensive polysomnography and self-reports.
• Longer and more consolidated sleep, along with enhanced slow oscillation-spindle coupling, correlate positively with global cognitive performance.
• No significant direct associations were found between the identified sleep composites and the incidence of dementia over median follow-ups spanning 5 to 19 years.
• The findings emphasize the need for nuanced approaches to exploring sleep’s multifaceted relationship with brain health and cognitive aging.

Study Background