Study Finds 7 Hours of Sleep Ideal for Cognitive Performance
Many people have a harder time falling asleep as they age, and they wake up more often during the night and early in the morning. Previous studies have that poor sleep may have a negative impact on cognitive function. A new study suggests that 7 hours of sleep is ideal for cognitive function and mental health for people in middle age and older.
For their study, the researchers used data from the UK Biobank that included approximately 500,000 adults between the ages of 38 and 73. Participants completed questionnaires about their sleeping patterns, mental health, and wellbeing. They also completed a series of cognitive tests.
The researchers found that participants who regularly got 7 hours of sleep per night had the highest cognitive performance and good mental health. Participants with insufficient or excessive sleep were at a higher risk of having impaired cognitive performance in the areas of processing speed, visual attention, memory, and problem solving. They were also at a higher risk of anxiety and depression.
The study was conducted by researchers from Fudan University. It was published online ahead of print on April 28, 2022 in the journal Nature Aging.
A previous study found that black cumin oil may help improve sleep quality.