Health

NY Times -  Getting too little sleep later in life is associated with an increased risk for Alzheimer’s disease. But paradoxically, so is getting too much sleep.While scientists are confident that a connection between sleep and dementia exists, the nature of that connection is complicated. It could be that poor sleep triggers changes in the brain that cause dementia. Or people’s sleep might be disrupted because of an underlying health issue that also affects brain health. And changes in sleep patterns can be an early sign of dementia itself.