Seven hours of sleep is great for being healthy, uncover study

  • 31-May-2022

A decent night's sleep is basic for a healthy body and mind and there is no rejecting that. Notwithstanding, the duration of sleep additionally holds importance. As indicated by a new study, seven hours of sleep every night is the ideal duration for middle to old-age people. The study led among 5,00,000 adults aged somewhere in the range of 38 and 73 uncovered that both lack of sleep and oversleeping were connected to mental health issues, and poor cognitive performance. The discoveries of the study published in the journal Nature Aging stated that sleep duration, psychiatric disorders, and dementia are firmly interconnected in older adults. Researchers attempted to grasp the underlying genetic mechanisms and brain structural changes in the study. “For every hour that you moved away from seven hours, you got worse. It’s very clear that the processes that go on in our brain during sleep are very important for maintaining our physical and mental health,” Prof Barbara Sahakian, from Cambridge University’s department of psychiatry told The Guardian. She also added that a good night’s sleep is as important as exercise. Deep sleep is significant for cognitive performance and memory consolidation. Thus, interruption of sleep or lacking sleep could keep the brain from clearing toxins appropriately or lead to cognitive decline. The study used information from the UK Biobank and analysed brain imaging and genetic data for right around 40,000 of the study participants. It found that the brain area generally impacted by sleep was the region containing the hippocampus, the brain’s memory center, with too much or too little sleep connected to a smaller brain volume. The analysis discovered that individuals who slept seven hours a night performed best on average on cognitive tests for processing speed, visual attention, memory, and problem-solving skills. Nonetheless, there is less clearness about why sleeping for more than seven hours could prompt issues. One potential reason, according to the study, is that individuals who have poor quality sleep will quite often invest more time sleeping (or attempting to sleep) since they feel tired. The paper concluded that conceivable genetic mechanisms and brain structural changes might underlie the connection between sleep duration and cognition and mental health.

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