First, it has a direct impact on health: computer monitors are accompanied by radiation and electromagnetic waves. Long-term use will harm people's eyes and induce some eye diseases, such as glaucoma. Pressing keys for a long time will be bad for fingers and upper limbs; When operating a computer, the body shape and whole body rarely change. High-speed, single, repetitive operation and persistent forced posture can easily lead to diseases of musculoskeletal system. The main parts involved in computer operation are waist, neck, shoulders, elbows and wrists.

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The second is the harm of computer microwave to the body: the low-energy X-rays and low-frequency electromagnetic radiation of computers are easy to cause the disorder of people's central nervous system. An office electromagnetic wave study in Britain confirmed that the low-frequency radiation and magnetic field emitted by computer screens can cause 765,438+09 diseases, including itchy eyes, neck and back pain, short-term memory loss, irritability and depression. For women, it is easy to cause abnormal reproductive function and embryonic development, dysmenorrhea, prolonged menstruation and other symptoms. A few women also have premature delivery or miscarriage. Pregnant women use computers for more than 20 hours a week, and the incidence of abortion increases by more than 80%. At the same time, it can also lead to fetal malformation. The third is to increase mental and psychological stress: in the process of operating the computer, the attention is highly concentrated, and the eyes and fingers move quickly and frequently, which makes the physical and psychological overload.

This leads to dreaminess, neurasthenia, head ache, decreased immunity, and may even induce some mental diseases. This kind of person is easy.

Loss of self-confidence, inner tension, irritability, anxiety, and ultimately lead to physical and mental fatigue.

Fourth, it leads to network syndrome: spending a lot of time and energy online for a long time without restraint will lead to various behaviors.

Often psychological disorders, personality disorders, and partial dysfunction of sympathetic nerve function develop into network syndrome in severe cases. The typical manifestations of this disease are: depression, loss of interest, sleep disorder, disorder of biological clock, loss of appetite, weight loss, lack of energy, mental retardation and excitement, low self-evaluation, slow thinking, reluctance to participate in social activities, little concern for others, alcoholism and drug abuse. 5. Gases emitted by computers are harmful to the respiratory system: computers, laser printers and other equipment will release ozone harmful to human health, which is not only toxic, but also causes some people to have difficulty breathing, especially those with asthma and allergies. In addition, staying in places with high ozone concentration for a long time can also lead to lung diseases. How to prevent computer from harming human body?

While computers bring high-tech enjoyment to human beings, people gradually pay attention to the harm it brings to operators. People who have been engaged in computer operation for a long time should have a sense of self-care. To prevent computer diseases in daily work, we should pay attention to the following points:

◆ Suitable working environment. Indoor light should be moderate, neither too bright nor too dark, and avoid direct light on the screen to avoid disturbing the light. The screen should not be too bright, and the color should be green. Rooms with empty talk should be disinfected regularly to control pollution. At the same time, always open the doors and windows or replace the indoor air with a ventilator.

◆ Correct sitting posture. Choose a chair with adjustable height, the back is fully supported, the knees are bent about 90 degrees, and the sitting position is comfortable. The center of the computer screen should be on the same horizontal line with the operator's chest, the distance between the eyes and the screen should be 40 cm ~ 50 cm, the body should not be too close to the table, and the elbows should naturally bend. During the operation, you should always close your eyes and rest for a while to adjust your eye fatigue. ◆ Don't hit the keyboard too hard, and try to relax your muscles. People suffering from wrist diseases or tenosynovitis should often move their wrists and finger joints, and try not to support their wrists on the edge of the table to avoid wrist pressure. Patients with scapulohumeral periarthritis should often move their shoulder joints to avoid long-term inactivity and tendon adhesion.

◆ Improve work efficiency and minimize time in front of the screen. Especially don't indulge in fast-paced, colorful video games. It has been clearly stipulated abroad that computer operators are allowed to rest for 1 hour and 10 ~ 15 minutes. Stand up and move your hands and feet when you are resting. You can also relax outdoors or do radio exercises. ◆ Wash your face and hands frequently. There is a large amount of electrostatic charge on the surface of computer screen, which is easy to collect dust, and the exposed places such as the operator's face and hands are also easy to be polluted by these pollutants. If you don't pay attention to frequent cleaning, spots may appear on your face, which may cause skin pigmentation in severe cases. ◆ Computer operators should eat more foods rich in vitamin A, such as carrots, bean sprouts, red dates, animal livers and lean meat. To supplement the deficiency of vitamin A in the body. You can also drink more green tea, because green tea contains a variety of phenols, which can fight against some harmful substances produced by computers.

People use computers more and more widely. Although computers bring convenience to people's work, study and life, the imbalance of positive and negative ions in the indoor environment using computers has certain side effects on human health, which will cause autonomic nervous disorder and depression. In addition, the constantly changing and scrolling characters on the computer screen will irritate the eyes, and computer operators often feel tired eyes, sore shoulders and backache. If you work in the absence of water, nutrition and vitamins, your body's resistance to radiation will drop and you will get sick easily.

In addition, computer operators should exercise the whole body and do eye exercises after working 1-2 hours. As long as we pay attention to the diet structure and combine work and rest, we can enhance the body's resistance and prevent the physical discomfort caused by computers.