Research shows that napping can help limit brain volume loss as we age, helping to reduce the risk of cognitive disease.
According to the National Institutes of Health , once a person turns 40, the brain loses about 5% of its size and weight with each subsequent decade. Starting in your 70s, the rate of aging accelerates, leading to poor cognitive function. Research published in the journal Sleep Health suggests that afternoon naps can help reduce this.
People who regularly nap are 2.6 to 6.5 years younger in terms of brain biology than those who don't. "Our findings suggest that, for some people, daytime napping may help protect brain health as they age," said study author Dr. Victoria Garfield.
Researchers from University College London and the University of the Republic of Uruguay analyzed the health and cognitive function outcomes of people who habitually nap and those who do not. The scientists used Mendelian randomization (using genetic information to find the influence of one factor on another) to conduct the study.
A middle-aged man taking a nap. Photo: Adobe Stock
"By looking at genes that are set at birth, Mendelian randomization eliminates bias and confounding factors that can affect the link between sleep and overall health," said lead author Dr. Valentina Paz.
The study found that napping may be a direct cause of larger overall brain volume. However, experts still point out the limitations of the work. The volunteers were all European and white. Therefore, the results may not be true for other races.
According to the Sleep Foundation, napping for 20 to 30 minutes increases alertness, mood, and memory, while reducing stress and fatigue. Some experts even say napping can make you a better employee or parent.
Thuc Linh (According to NY Post )
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