2024-01-04 01:40:00
A study showed that people who suffered from severe sleep disorders in their 30s and 40s had a high risk of developing cognitive impairment 10 years later./Chosun Ilbo DB
Research has shown that people who experience sleep disorders in their 30s and 40s are more likely to have problems with memory and thinking 10 years later.
A research team at the University of California, San Francisco (UC San Francisco) announced on the 3rd (local time) that people with low sleep quality are more likely to develop cognitive impairment. The research team said, “Considering that signs of Alzheimer’s begin to accumulate in the brain decades before symptoms begin, the link between sleep and cognition may be a clue to the signs of Alzheimer’s.” The research results were published in ‘Neurology’, the medical journal of the American Academy of Neurology.
The research team surveyed the sleep time and quality of 526 study participants with an average age of 40 years. Study participants recorded their activities with a wristwatch-type wearable device for three days on two occasions, one year apart. They also reported their bedtime and wake-up time through a sleep diary and evaluated their sleep quality with a score between 0 and 21. A higher score meant lower sleep quality.
Study participants were also examined for ‘sleep fragmentation’, which refers to repeated awakenings. Through this, the research team found that on average, 19% of participants had symptoms of sleep fragmentation. 239 people, or 46% of the participants, were found to have poor quality sleep scores of 5 or higher.
The research team confirmed that 44 of the 175 study participants who had severe sleep problems had decreased cognitive ability 10 years later. People who had the most sleep disruption were more than twice as likely to have cognitive decline compared to those who had the least sleep disruption.
The research team said, “Quality of sleep is more important than quantity for cognitive health in middle age,” and “If sleep is strongly related to cognition, research is needed to determine whether there is a period of life in which sleep is important.”
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