Does Poor Sleep Contribute to Alzheimer's Disease?

The video discusses a study on how the brain cleans itself during sleep, potentially linking poor sleep to Alzheimer's disease. The study, published in Science, used neuroimaging to observe cerebral spinal fluid (CSF) pulses following electrical activity during deep sleep, suggesting a cleaning process. While the study offers insights, it involved only 11 subjects and did not directly examine Alzheimer's patients. The findings highlight the importance of sleep quality but acknowledge multiple factors contribute to Alzheimer's.

What role does cerebral spinal fluid (CSF) play in the brain during sleep?

What limitations did the recent study have in its examination of sleep and Alzheimer's?