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While you know not to have enough sleep can make it difficult to operate the next day, many of us still not slogy for theRecommended Seven hours per night, according to the disease control centers and prevention (CDC); The agency says that one in three adult gets less than that. In addition to this feeling of Grogness you have after caught up enough Zzz's, there are other long-term effects on sleep can have on you later in life. In fact, a new study of nearly 8,000 adults who were followed for 25 years have been proven that get a number of sleep hours per night can also affect yourbrain health, making you much more subject to dementia. Read it to find out what researchers have discovered and how much sleep is the real minimum.

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The new study, published on April 20 in the scientific journalNature Communications, found thisSleep six hours per night or less One night was linked to an increased risk of dementia among people aged 50 to 60 years.

Researchers at the INSERM French Health Research Institute analyzed data from a long-term study of the University College London, who followed 7,959 British between 1985 and 2016. They compared the health of adults who n. 'have not slept enough to people who slept people who slept the recommendation seven hours.

Overall, 521 participants developed dementia during the study and patients had an average of 77 years when a diagnosis. The results show that the participants who slept seven hours per night had the least case of dementia. There were 30%Increased risk of dementia In those who have constantly chick in up to six hours a night in the 50s and 60s.

"Many of us have had a bad night's sleep and probably know that this can have an impact on our memory and think in the short term, but an intriguing question is whether long-term sleep patterns can affect our risk of dementia ",Sara Imarisio, PhD, Alzheimer's Research Responsible U.K., said in a statement in response to the new study. "We know that theDiseases that cause dementia Start up two decades before the symptoms such as memory loss begins to demonstrate, mid-life is a crucial period for risk factor research. "

Earlier this year, Brigham researchers and the female hospital and Boston College have found that even less sleep means a risk of even greater dementia. The study, published in the newspaperAgingIn February, compiled data from the National Study on Health and Aging Trends (NHTs) on 65-year-olds aged persons who are eligible for Medicare. The researchers compared2,810 seniors who had a bad sleep To those who slept an average of seven to eight hours per night over the course of five years. They found that people over 65 reportedSleep less than five hours Per night seemed to be twice as likely to develop dementia.

"Deficiency of sleep Initially, when the average age of participants was 76 years old, it was associated with double the risk of incident dementia and mortality every 4 to 5 years, "Charles Czeisler, MD, a superior author of the study and head of the Division of Sleep Disorders and Circadie Disorders, said in a statement. "These data add to evidence that sleep is important for cerebral health and stresses the need for further research on the effectiveness of sleep improvement and treat sleep disorders on the risk of disease and mortality. Alzheimer's. "

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The Alzheimer Researcher Imarisio said a problem with the most recentNature CommunicationsStudy and with the link between sleep and dementia in general, is it "can not tease the cause and effect". "Although this suggests that persistent lower sleep was linked to an increased risk of dementia, he did not find an association between the average sleep time and the Douveria of the Douveria," she notes.

"We know that sleep changes are commonly reported in people with dementia"Sexton, Dphil, Director of Scientific Programs and Awareness of the Alzheimer Association, saidUnited States today last month. "There was a chicken and the debate on the eggs on what comes first and sounlikely sleepis a consequence of dementia or whether it can be a factor contributing to its development. "

According to the Sleep Foundation,People with dementia or Alzheimer's disease frequently undergoing restless leg syndrome, the movement of the periodic members (PLMD), the obstructive sleep apnea (OSA), the disorder of REM sleep behavior and depression, which may have An impact on sleep. And the cognitive decline can affect how sleep is restored. There are three steps of sleep: it comes first light sleep; So sleep deep, called slow sleep with wave; And finally, Dream Sleep, called REM (Rapid Eye Movement), according to the Foundation of Sleep. "Slow wave sleep and Sleeping REM are critical parts of how sleep works to restore the body and mind," explains the experts. "People with dementiaSpend less time In slow wave sleep and Sleep REM and more time in earlier steps. "

According to Imarisio, there are some other things that can help distinction of cognitive decline in addition to sleep. "Although there is no safe way of preventing dementia, our control can reduce our risk," Imarisio said. "The best evidence suggests that non smoking, drinking only moderation, to remain mentally and physically active, to eat a balanced diet and maintain cholesterol and blood pressure levels can all help keep our brain in good health as we get older. "

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