睡太久 智力下降變懶惰Sleeping too long decline in intellectual laziness change

睡太久 智力下降變懶惰 　睡眠時間多少最健康，需視自身情況來確定。 【新華網】大家都知道，睡覺太少人就會生病，很多人卻不知道，睡得太多同樣不好。近日一則消息稱，美國的研究人員發現，50歲以上女性每天睡9小時中風風險增加。據現代快報報導，如果睡眠過多，不僅消除不了疲勞，還會影響健康和智力。在睡眠時間中，死亡率最低的睡眠時間約為7小時。 風險1： 中風和糖尿病 美國的研究人員在對9萬多名50—79歲的女性進行了長達7年半的調查後發現，每天睡眠超過9小時的人中風危險比睡7小時的人要增加70%，睡眠時間是增大中風危險的獨立因素。 報導指出，南京腦科醫院的專家表示，老年人的血液黏稠度比較高，如果睡眠時間過長，就會導致血液黏稠度增加，而血液黏稠度增加就容易誘發中風等腦血管疾病。 有關專家說，還有一項研究表明，睡眠時間太長，也有可能誘發糖尿病，調查發現，每天的睡眠時間在7—8小時的人，身體最為健康。如果睡眠時間不足6小時，患糖尿病的風險就會增加約2倍；如果睡眠時間超過8小時，患糖尿病的風險則會增加3倍多。 有調查顯示，一天睡眠少於6小時會損害一個人的健康。同時，睡眠時間超過9小時同樣也會危害健康。在睡眠時間的調查中，死亡率最低的睡眠時間約為7小時。一天睡眠時間平均在4小時以下或是10小時以上的人，不管是男是女，死亡率都相當高。 風險2： 呼吸道、心臟和消化疾病 小李是一所學校的老師，喜歡睡懶覺，暑假裏常常一睡就是10多個小時。他發現自己的身體還是比較差，常常動不動就感冒。醫生幫他分析認為，他常常感冒可能和他喜歡睡懶覺有關係。 江蘇省中醫院呼吸科主任醫師史鎖芳說，臥室中早晨空氣最污濁，即使虛掩窗戶還是有部分空氣未流通，不潔的空氣中含有大量細菌、病毒、二氧化碳和塵埃，對呼吸道抗病能力有影響。而對於長期睡眠時間過長的那些閉門貪睡者，平時運動就少，再加上臥室內污濁的空氣，就容易經常出現感冒、咳嗽等症狀。 人活動時心跳加快，心肌收縮力加強，心臟排血量增加。人休息時心臟處於休息狀態，心跳、收縮力、排血量下降。如果睡眠過多，就會破壞心臟休息和運動的規律，心臟一歇再歇，最終會使心臟收縮乏力，稍一活動便心跳不一、心慌乏力。另外，如果睡眠過多，就無法按時進餐，胃腸發生饑餓性蠕動，打亂了胃液分泌規律，影響消化功能。 風險3： 越睡越懶，智力下降 「一晚睡10個小時，為什麼白天還是無精打采呢？」在某公司上班的小陳簡直想不通，以前，他常抱怨自己睡得太少，以致頭昏腦漲。但每天增加了睡眠時間，還是沒精神，上班時反應慢，被老板罵了好多次。 專家解釋，大部分人會認為，消除疲勞就應該多睡覺。其實，想用增加睡眠時間來獲得健康的觀念，是完全錯誤的。睡眠時間過長的人，就會變得懶惰、軟弱無力，甚至智力也會隨之下降。 一夜休息後，肌肉和關節會變得鬆弛，醒後立即活動可使肌張力增加，也可使肌肉的血液供應增加，使骨骼、肌肉組織處於修復狀態，同時將夜間堆積在肌肉中的代謝產物消除，有利於肌肉組織恢復運動狀態。 經常睡懶覺的人，因肌肉組織錯過了活動良機，起床後會感到腿軟、腰椎不適，周身無力。睡懶覺的人睡眠中樞長期處於亢奮狀態，而其他神經中樞由於受到抑制時間太長，恢復活動的功能就會變得相對緩慢，因而會感到終日昏昏沉沉、無精打采，甚至智力下降。 健康睡眠時間6-8小時 那麼，究竟每天要睡多久才有利於健康呢？專家認為，對於成年人來說，6-8小時是其所需的標準睡眠時間，老年人在這個標準上再減少1-2個小時，青少年可以增加1-2個小時。對於嬰幼兒來說，睡眠時間則需要更長。 當然，睡眠時間多少最健康，還需要依據自身的情況來確定。判斷自己的健康睡眠時間的標準，應該以第二天不會感到身體疲乏、感覺精力充沛來判定。 2008-08-27 Sleeping too long decline in intellectual laziness change How many hours of sleep most healthy, depending on their own situation to determine. [] - We all know, sleep too little people will fall ill, many people do not know, sleep too much the same bad. Recently, a source said, the U.S. researchers found that women over 50-year-old slept nine hours a day increased risk of stroke. According to Modern Express reported that if too much sleep, not only can not eliminate fatigue, but will also affect the health and intelligence. In sleep, the lowest mortality rate of about seven hours of sleep time. Risk 1: stroke and diabetes Researchers in the United States of more than 90,000 women 50-79 years old, which lasted seven and a half years after the survey found that more than nine hours of sleep a day of stroke risk than those who slept seven hours to increase 70 percent, sleep Increased risk of stroke is an independent factor. Reported that the Nanjing Brain Hospital Division of experts said that the elderly high blood viscosity, if the sleep time is too long, it will lead to increased blood viscosity, an increase of sticky blood on the easy-induced stroke, and other cerebrovascular disease. Experts say there is also a study shows that sleep time is too long, but also may trigger diabetes, the survey found, the daily sleep time in the 7-8 hours, the most physical health. If less than six hours of sleep time, the risk of diabetes will increase by about 2 times if more than eight hours of sleep time, the risk of diabetes will increase more than three times. Surveys show that less than six hours of sleep a day will damage a person's health. At the same time, more than nine hours of sleep the same time will be hazardous to health. Sleep time in the survey, the lowest mortality rate of about seven hours of sleep time. The average time in a day of sleep for four hours following 10 hours or more persons, whether male or female, the mortality rate is very high. Risk 2: respiratory, digestive and heart disease Mike is a school teacher, like Shui Lanjue, summer is often a sleep over 10 hours. He found that his body is still relatively poor, often at every turn on the cold. Analysis of doctors to help him that he often cold and he might have liked Shui Lanjue relations. Jiangsu Province, chief physician of Chinese medicine hospitals Respiratory history of lock-fang said that the bedroom most polluted air in the morning, Xu Yan windows or even some of the air flow, the dirty air contains a lot of bacteria, viruses, carbon dioxide and dust, the respiratory disease-resistant ability Impact. For long-term sleep time is too long those behind closed doors Tanshui, usually less movement, coupled with the dirty air in the bedroom, it is easy frequent colds, coughs and other symptoms. Human activities speed up the heart rate, cardiac contraction strengthen, the heart output increase. When people break the heart in a state of rest, the heart, contraction of output decline. If too much sleep, it will undermine the heart of rest and exercise, the heart of a break to rest, eventually will lack the heart contraction, a slightly different activities will heartbeat, flustered weak. In addition, if too much sleep, can not eat on time, in hunger and gastrointestinal motility, disrupted the secretion of gastric juice, the impact on digestion. Risk 3: The Sleeping more lazy, mental decline "Wanshui 10 hours, why do during the day or lethargy» "work in a company it Xiangbu Tong Xiao Chen, previously, he often complained about their sleep too little, resulting in dizziness brain up. However, an increase of sleep a day, or no spirit, work at the slow response and was scolded by the boss many times. Experts explained that most people would think, should eliminate fatigue and more sleep. In fact, want to use sleep time to increase access to health concepts, is completely wrong. Sleep time is too long, will become lazy, weak, or even intelligence will also decline. After overnight rest, muscles and joints will become lax and wake up immediately after the event can increase muscle tension may also increase the blood supply to muscles, bones, muscles in a state of repair, while at night the muscles in the accumulation of metabolites Elimination is conducive to restore muscle movement. Regular Shui Lanjue who missed because of muscle activity opportunity to get up after that Tuiruan, lumbar discomfort, Zhoushen weakness. Shui Lanjue people sleep in a long-term Kangfen hub status, while other nerve centre due to curb a long time to restore the function will become relatively slow, and will feel all day Hunhunchenchen, lethargy, and even mental decline. Healthy sleep 6-8 hours So, how long is a day to sleep it can help health » Experts believe that for adults, 6-8 hours is the standard required for its sleep time, the elderly in this standard on the further reduction of 1-2 hours, young people can increase 1-2 hours. For infants and young children, sleep time is longer. Of course, the number of hours of sleep most healthy, it is also necessary based on their own situation to determine. Determine their own health sleep time standards, should be the next day will not feel tired physically, I feel full of energy to determine. 2008-08-27 For more information, see World Journal News ePaper

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