Will make people sleep too long mental decline

We all know that too little sleep, people will fall ill, many people do not know, sleep too much, equally bad. Recently, a news that the United States, researchers found that women over 50 years of age slept nine hours a day increased risk of stroke. Reporter yesterday in an interview also understand that if a sleep too much, not only fail to fatigue, will also affect the health and intelligence. During sleep time, the lowest mortality rate of about 7 hours of sleep.



　　Risk 1:

Stroke and diabetes

U.S. researchers on more than 90000 women aged 50-79 were up to seven and a half years of investigation found that more than nine hours of sleep a day risk of stroke than people who slept 7 hours to increase 70%, sleep Time is an independent factor increasing the risk of stroke. Nanjing Brain Hospital of experts, the older the blood viscosity is relatively high, if the sleep time too long, it will lead to increased blood viscosity, blood viscosity increases are likely to induce stroke and other cerebrovascular disease.

To experts, there is a study shows that sleep time is too long, may also trigger diabetes, found that daily 7-8 hours of sleep time in the person, the body is most healthy. If you sleep less than 6 hours, the risk of diabetes would be increased by about 2-fold; if more than 8 hours sleep, the risk of diabetes would increase three times more.

A survey shows 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 time, the same will be hazardous to health. In the sleep survey, the lowest mortality rate of about 7 hours of sleep. One day an average of four hours of sleep time below 10 hours or more persons, whether male or female mortality rates are quite high.



　　Risk 2:

Respiratory tract, heart and digestive diseases

Xiao Li is a school teacher, like up late, summer vacation is often a deep sleep for 10 hours. He found that his body is still relatively poor, and often at every turn a cold. Analysis of a doctor to help him believe that he is often cold, and he likes to be up late are.

Respiratory Medicine Hospital, Jiangsu Province, the history of the lock-fang, chief physician, said the bedroom of the most polluted air in the morning, even if the window is still some air-Xu Yan did not flow, a dirty air contains a lot of bacteria, viruses, carbon dioxide and dust, the ability of respiratory disease impact. For the long-term sleep for too long behind closed doors Snooze those who usually exercise less, coupled with the dirty air inside the bedroom, it is easy to frequent colds, cough and other symptoms.

Human activities, heart rate, myocardial contractility and enhanced heart to increase blood row. To rest when the heart is resting, heart rate, contractile force, decreased blood row. If you sleep too much, it will destroy the heart of the laws of rest and exercise, the heart a break and then break would ultimately result in cardiac contraction fatigue, an activity will be slightly different heartbeat, palpitation weak. In addition, if too much sleep, you can not eat on time, the threat of starvation of gastrointestinal motility, disrupted the secretion of gastric juice laws affecting the digestive function.



　　Risk 3:

The more sleep the more lazy, mental decline

"A 10-hour sleep at night, why is it day or listless?" Chen to work in a company is simply not understand the past, he often complained of too little sleep, resulting in dizziness brain up. However, an increase of sleep time per day, or not the spirit of slow reaction at work was the boss of a repeat visitor.

Expert explained, most people would think that fatigue should be more than sleep. In fact, wants to increase the sleep time to get a healthy concept is completely wrong. People who sleep too long, they will become lazy, weak, and even mental decline will follow. Night's rest, the muscles and joints become lax, wake up immediately after the event can increase muscle tension, but also allows the muscles to increase blood supply to bone, muscle tissue in the repair state, while night-time accumulation of metabolites in muscle eliminated, is conducive to muscle tissue to restore state of motion. People often up late, because the activities of muscle tissue missed opportunity to get out of bed after feeling Tuiruan, lumbosacral discomfort, whole body weakness. People up late in the excited state of the long-term sleep center, while other central nervous due to the inhibition time is too long to restore functional activity becomes relatively slow, so all day long will feel drowsy and lethargic, and even mental decline.



　　Healthy sleep 6-8 hours

So, how long can it be conducive to sleep every day to be healthy? Experts believe that, for adults, 6-8-hour standard required of their sleep time, the elderly in this standard further reduction of 1-2 hours, young people can add 1-2 hours. For infants and young children, the sleep time will take longer.

Of course, how much sleep most healthy, but also according to his own situation to determine. Sleep time to judge their own health standards should be based on the following day the body will not feel tired, feel full of energy to determine