A recent study reported that poor or lack of sleep in older adults can be linked to some changes in the brain, which is associated to dementia.
One of my LinkedIn connections, Terry Richardson shared a post on how researchers were conducting a study on a group of men who went through sleep tests in 1999. Most of the group died in 2010.
Their autopsy revealed that those who have high one-quarter of sleep duration and 95 percent of oxygen saturation were four times more likely to have increased levels of micro-infarcts, a small area of dead tissue in the brain caused by blood supply loss, compared to those who have low one-quarter sleep duration.
Compared to those who have 25 percent of deep (slow wave) sleep duration, those in high one-quarter were three times more likely to have a moderate to high level of brain atrophy, in a general sense.
Dr. Rebecca Gelber, the lead author and epidemiologist at Veterans Administration in Hawaii, said that there were numerous previous studies that prove the link between various types of sleep disorder and dementia. The lesions found in the brain explain the link between the two.