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1-min read

Too Much Sleep is as Bad as Too Less, Affects Cognitive Function

A study has now found that people who sleep for fewer than five hours a night may experience memory problems effects which is similar for people who get a stable nine hours a night sleep as well.

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Updated:May 26, 2019, 5:55 PM IST
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Too Much Sleep is as Bad as Too Less, Affects Cognitive Function
You Didn’t Get Your Eight Hours Sleep: Studies suggest that getting a sound eight hour sleep every night helps to reduce your junk food cravings the next day. This is why you should make sure you get the right amount of sleep.

Do you love to sleep? Or are you one of those who wake up at the stroke of dawn? Well, it turns out that both are bad for our mental health. A new study now suggests that sleeping for nine hours a night could be as bad for your memory as only getting five.

While it is well known that people who sleep for fewer than five hours a night may experience memory problems, a study has now found the same effects in those who get a stable nine hours a night sleep as well.

Researchers studied memory tests for almost four lakh people who were asked to match six pairs of hidden cards after memorizing their positions. They found that when compared to people who slept for seven hours, those who reported sleeping for nine hours made the same number of errors as people sleeping for five hours or less.

In fact, the study reported that they made 5 per cent more errors in the card game. As for those who slept for 10 hours or more, they made a whopping 11 per cent more errors.

The results suggest that sleeping for too long may hit thinking skills just like sleep-deprivation.

According to experts, people who sleep for too long may have poorer sleep quality, which prevents regions of the brain communicating properly and puts them at higher risk of cognitive issues.

According to the study authors, sleep duration is linked with sleep quality and poor sleep quality could disrupt the circadian rhythm, which regulates gene expression in the human brain. This might lead to the neurodegenerative process leading to cognitive dysfunction.

According to study author Dr Victoria Garfield, while some people may think that going to bed and sleeping for longer hours is fine, but the findings suggest that sleeping for too long may affect the memory of an individual as well. The study, published in the International Journal of Epidemiology, has, however, added that they found little evidence of the duration of sleep and whether it is linked to the risk of dementia or not.

The results from the study highlighted the fact that sleeping for too long may hit thinking skills just like sleep deprivation.

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