Alzheimer's News Today | Alzheimer's, Other Dementias May Be Linked with Prolonged Sleep ... Alzheimer's News Today Read about how sleeping for more than nine hours each night may predict the risk of developing dementia. This sleeping habit is an early warning sign of Alzheimer's – do YOU do this? Sleeping longer than 9 hours could be a sign of dementia More Than 9 Hours Of Sleep Could Indicate Alzheimer's Disease: Here Are Other Warning Signs Of Dementia |