Sleeping 7 hours a night is best for the brain – VnExpress

The habit of sleeping 7 hours a night helps the brain to perceive and process information best according to a recent study of over 500,000 people.

The 500 adults involved in the study ranged in age from 38 to 73 in the UK. They were asked about their sleep habits, mental health and happiness, and completed a series of cognitive tests to assess brain function. A small group of about 40,000 people had their brains scanned and tested in a lab to gather genetic information.

Research shows that sleeping 7 hours a night is ideal for mental health. Those who slept about 7 hours per night had better cognitive results than other subjects. Longer or shorter sleep per night has been linked to reduced ability to make decisions, solve problems, pay attention, process information, and learn new things. Sleeping too much or less than this has been linked to many symptoms of depression and anxiety and affects overall health.

Brain scans showed that people who slept about seven hours a night had fewer structural changes in brain regions involved in cognitive processing and memory than study participants who slept too little or too much. Participants who regularly slept about 7 hours per night, which did not deviate too much from this pattern, had better cognitive function and mental health than those whose sleep patterns varied greatly or were excessively rested or insufficient.

“Although we cannot conclude that too little or too much sleep causes cognitive problems, the analysis looks at individuals over a long period of time,” said Jianfeng Feng of Fudan University (China). than seem to support this idea”.

Quality sleep helps the brain function better. Image: Freepik

How well the mind works as we age may depend on how well rested it is. Middle-aged and older people have worse cognitive function when they sleep too little or too much. The reasons why older adults have poorer sleep are complex, as it is influenced by a combination of genes and brain structure.

Sleep plays an important role in cognitive function and psychological health. It also helps keep the brain healthy by eliminating substances that contribute to the development of dementia and Alzheimer’s disease. Sleep problems often develop as we age, including difficulty falling asleep, staying asleep, and decreasing quantity and quality of sleep.

Previous studies have found that middle-aged and older people with insomnia or other sleep disorders are at higher risk of cognitive decline. People who struggle to fall asleep or who don’t get enough, poor-quality sleep tend to have more cognitive decline and memory loss than people who sleep well through the night.

According to the Centers for Disease Control and Prevention (CDC), adults need at least 7 hours of sleep each night for optimal health and well-being. More than a third of adults sleep less than 7 hours. This has been linked to an increased risk of a range of chronic health problems including obesity, heart disease, asthma, diabetes and depression.

Barbara Sahakian (Department of Psychiatry, University of Cambridge), co-author of the study, said that good sleep is important at all stages of life, especially as we age. Find ways to improve sleep for the elderly to help maintain good mental health and avoid cognitive decline, especially for patients with mental disorders, dementia.

Kim Uyen
(Follow Everyday Health)


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