Sleep less than five hours and more than nine hours harmful to health?

Sleep less than five hours and more than nine hours harmful to health?

A new US study warns that sleeping five hours or less at night doubles the risk of dementia.

According to this study, sleeping for more than nine hours has also been declared dangerous.

According to Al Arabiya Net, researchers in Boston studied data from 2,812 American adults over the age of 65. Studies have shown that five hours or less of sleep doubles the risk of dementia.

In dementia, memory begins to be severely affected. Experts say seven to eight hours of sleep is good for health. The US National Health Service has also confirmed that adults need six to nine hours of sleep, while people aged 65 and over are advised to get seven to eight hours of sleep a night. 

According to lead researcher Dr. Rebecca Robbins, this study clarifies the link between poor sleep and the risk of developing dementia. According to Dr. Rebecca Robbins, the elderly need adequate rest, and a good night's sleep is essential.

Researchers have shown that sleep disturbances and abnormal sleep periods can lead to the development of Alzheimer's disease. Causal research Researchers have acknowledged that their study is limited, but say that sleep disorders are not the only cause of dementia.

Researchers stress that more research is needed to examine the possible link between sleep, dementia and various causes of death in the elderly. Danger of sleeping more than nine hours On the other hand, a 2019 study found that people who slept nine or more hours a night had significantly reduced memory and language skills and an increased risk of developing dementia.