? A student has insomnia, can't sleep at night, has no spirit during the day, his academic performance has plummeted, his mood is low, and he often loses his temper for no reason. The doctor's initial diagnosis may be that he sleeps at night and plays with his mobile phone, coupled with the pressure of study, and then prescribed some drugs to improve sleep. However, the patient's condition did not improve, and the hospital checked it with instruments. To my surprise, this 20-year-old boy has brain atrophy. ?
Mobile phones are a necessity for modern people. Whether it is contact, making friends, managing money or shopping, it is inseparable. There are more and more owners of mobile phones, and the time spent using them is gradually increasing. It would be terrible if playing mobile phone before going to bed every day would lead to brain atrophy.
Cognitive brain atrophy
Accurately speaking, brain atrophy is not a disease, but a symptom. Heredity, brain injury, poisoning, cerebrovascular malformation, brain tumor, cerebral arteriosclerosis, etc. Any disease that can change the blood circulation of the brain and lead to long-term chronic ischemia of brain tissue may lead to brain atrophy. Imaging examination (CT, MR) can find that the volume of brain tissue decreases and the ventricle expands.
Contrast images before and after brain atrophy
Clinically, there are different manifestations according to the location of the disease (brain or cerebellum) and the degree of disease (early, middle and late).
This myth is obviously about brain atrophy. In the early stage of brain atrophy, patients' anxiety, depression and paranoia are the main symptoms, and there may be symptoms such as headache, dizziness, insomnia, lethargy and memory loss. Because the lesion is slight, there is no abnormality in imaging examination.
If the blood supply of brain tissue is not improved, patients will enter the early stage of the disease, and there will be obvious emotional and behavioral abnormalities, paranoia, speech disorders and other phenomena.
Sleep and brain
Sleep can really protect the brain. There is a dense tissue between the human brain and blood vessels, that is, the blood-brain barrier. The blood-brain barrier will prevent drugs, protein and other components from entering the brain, and almost only allow oxygen, carbon dioxide and blood sugar to pass through, so as to maintain the stability of the brain environment and avoid brain tissue damage.
Schematic diagram of blood-brain barrier
Some scholars believe that when people are awake, the permeability of the blood-brain barrier increases, and harmful substances are more likely to enter the central system through the blood-brain barrier; During sleep, the permeability of the blood-brain barrier is weakened, thus protecting the central nervous system. 1
In addition, lack of sleep will also have an impact on body mass index (BMI) and glucose metabolism, affecting human health. This is an accepted fact. 2
Lack of sleep and brain atrophy
Lack of sleep is indeed a bad thing, but will it lead to brain atrophy?
At this year's annual meeting of the American Academy of Neurology (AAN), researchers at Columbia University said that sleep status is indeed related to brain tissue volume.
They recruited 50/kloc-0 volunteers over the age of 65, assessed the sleep quality of the subjects through the sleep scale, and then studied their brain volume by using cross-sectional imaging technology (MRI). The results show that the decrease of cerebral cortex and gray matter is related to the increase of daytime sleepiness, and the decrease of left olfactory ability is related to the longer sleep time.
But in the end, is the brain tissue lesion causing the sleep problem, or is the sleep problem causing the brain tissue lesion? So far, there is no conclusion. three
20 1 1 Some scholars are interested in the brain structure of Internet addicts. Studies have shown that the gray matter volume of internet addicts is significantly smaller than that of normal people of the same age. This is consistent with other types of addiction research (such as heroin addiction). five
In other words, the student mentioned at the beginning may not suffer from brain atrophy because he plays mobile phone before going to bed every day. It is more likely that his addictive behavior (internet addiction, not excluding other types) led to brain tissue lesions.
Truth: Playing mobile phone late at night is really harmful to health, but it won't lead to brain atrophy. What really causes brain atrophy is addictive behavior.
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refer to
1 beam,, Li Jing. Analysis of Sleep Deficiency and Sleep Health of Adolescents [J]. International Medical and Health Herald, 2006 (1).
2 Jia Lina, Wang Xingjuan. Effect of lack of sleep on metabolism [J]. Modern preventive medicine, 2007,34 (6):1061-1062.
Sleep problems are related to decreased brain volume. April 19, 20 16.
Yuan Kai, Qin Wei, Wang Guihong, Fang Zeng, et al. (20 1 1) The microstructure of adolescents with Internet addiction is abnormal. PLoSone, June20 1 1 Volume 6, No.6 e20708
5 Jiang Shaoai, Wang Xuyi, Hao Wei. Comparative study on gray matter density of heroin addicts [J] China Journal of Drug Dependence, 2006, (05).
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Author: Zhao Yanchang