Being extra ‘sleepy’ during the day means higher chance of developing this pre-dementia syndrome New York Post One Stage of Sleep Seems to Be Critical in Reducing Dementia Risk ScienceAlertHow Daytime Drowsiness Could Signal Early Cognitive Decline SciTechDailyExcessive daytime sleepiness can lead to dementia, study indicates MSNPoor sleep quality linked to incident motoric cognitive risk syndrome Medical Xpress