Experts Highlight Sleep Disturbances as Potential Early Indicators of Dementia
Recent insights from medical experts suggest that certain sleep disturbances may serve as early warning signs of dementia. Dr. Arman Fesharaki-Zadeh from Yale School of Medicine emphasizes the strong association between sleep disruption, particularly impairment of slow-wave sleep, and an increased risk of developing dementia. The glymphatic system in the brain, responsible for clearing toxins during sleep, can be affected by these disturbances, potentially leading to the buildup of amyloid beta, a protein linked to dementia. Additionally, disruptions in sleep stages, such as REM sleep, can impair memory consolidation, further contributing to cognitive decline. Neurologist Dr. Fawad Mian notes that conditions like REM Sleep Behavior Disorder, where individuals act out dreams, may precede memory symptoms in dementias like Lewy body dementia and Parkinson's. Other symptoms include severe insomnia, falling asleep at odd times, and wandering at night, all of which disrupt the circadian rhythm and may indicate n... 
