Deep sleep is an important period of sleep where the body and brain get full rest. It is the time when the body enters the mode of repairing and restoring itself. Many people may หากคุณสนใจเล่นพนันออนไลน์ที่ดีที่สุด สามารถสมัครสมาชิก UFABET ได้ที่นี่ พร้อมรับโปรโมชั่นพิเศษสำหรับสมาชิกใหม่ understand that getting enough sleep for only 7-8 hours is enough. But in fact, the quality of sleep, especially deep sleep, has a great impact on our health.
What is deep sleep?
Medical experts recommend that most adults get about 7-9 hours of sleep per night. Our bodies have four main sleep cycles:
- 3 Non-REM stages
- REM stage 1
The first two stages of Non-REM occur as the body begins to enter sleep. The third Non-REM stage is called “deep sleep.” It is the longest of the three Non-REM stages. During this time, the body’s heart rate and breathing slow down, and brain waves become slower and larger. It is usually very difficult to wake someone in deep sleep.
During deep sleep, the body replenishes energy, repairs worn out cells, and builds tissue and bone. In addition, past studies have also found that deep sleep helps strengthen the body’s immune system and plays an important role in maintaining brain health by helping develop and retain memories, enhancing intellectual abilities, and making learning more efficient.
Why does deep sleep affect dementia?
Since deep sleep plays a key role in maintaining brain health, insufficient sleep may increase the risk of developing brain-related diseases such as dementia, including Alzheimer’s disease.
- A study published in April 2021 found that people aged 50-60 who slept less than six hours a night had a higher risk of developing dementia later in life.
- A study published in June 2021 reported that deep sleeps may help remove toxic proteins linked to Alzheimer’s disease from the brain.
- A study published in May 2023 provided evidence suggesting that deep sleeps may help prevent memory loss in older adults with high levels of beta-amyloid in the brain, a key factor in the development of Alzheimer’s disease.
Medical News Today spoke with Dr. David Merrill, a geriatric psychiatrist and director of the Pacific Brain Health Center at the Pacific Neuroscience Institute in Santa Monica, California, about the study.
He said the study has several important implications, including that slow-wave sleep loss may be a modifiable risk factor for dementia, the most common cause of which is Alzheimer’s.
“We know that age and genetics are non-modifiable risk factors, but the good news is that we are finding many ways to improve the modifiable risk factors, and sleep quality is certainly one of them,” says Dr. Merrill.