Sleep consists of two states: slow and fast sleep. Slow (deep) sleep is responsible for how well a person will rest at night. The longer this phase, the better. During slow sleep, breathing slows down, heart rate, muscles relax, breathing becomes measured, body temperature decreases. With age, the duration of deep sleep decreases.
sleep quality in old people. For those who had trouble sleeping, researchers found high rates of amyloid beta and tau protein. These are clusters in the brain cells that cause atrophy and death of brain tissue.
It is believed that
that in Alzheimer's disease it is beta-amyloid and tau protein that are responsible for impaired brain function.
The study involved 119 people over 60 years of age with no cognitive impairment.
For a week, scientists analyzed their sleep using an electroencephalogram (EEG), sleep logs, and sensors that recorded movements during sleep. The researchers found that a decrease in the duration of slow (deep) sleep occurs simultaneously with an increase in the levels of amyloid beta and tau protein. At the same time, this does not affect the duration of sleep in general.
Scientists believe that the relationship between sleep disturbances and the level of beta-amyloid and tau protein is an important discovery. According to them, the results will help in the diagnosis of Alzheimer's disease.
According to statistics, in every third case, the cause of senile dementia is Alzheimer's disease . Every five years, the risk of getting sick doubles. The disease remains incurable, therefore, all treatment methods are aimed only at correcting the symptoms.