The advantage is that it is convenient for us to communicate. The disadvantage is that when people use mobile phones, mobile phones will emit radio waves to the transmitting base station, and the human body will absorb radio waves more or less. These radio waves are the radiation of mobile phones. Generally speaking, mobile phones radiate less when they are in standby and more when they are talking. When the mobile phone number is dialed but not connected, the radiation is the largest, and the radiation amount is about three times that of standby. These radiations may change human tissues and adversely affect human health. Don't put the pillow aside. Professor Zhao Yufeng, from the Indoor Environment Monitoring Committee of China Interior Decoration Association, said that mobile phone radiation is harmful to people's heads. It will cause dysfunction of people's central nervous system, causing headaches, dizziness, insomnia, dreaminess, hair loss and other symptoms, and some people will have a sense of irritation on their faces. In the United States and Japan, there have been many cases of suspected brain tumors caused by cell phone radiation. In July last year, a man with brain cancer in Maryland, USA, thought that using a mobile phone made him suffer from cancer, so he filed a lawsuit against the mobile phone manufacturer. Therefore, when people answer the phone, it is best to keep the phone away from their bodies and then put it in their ears to talk. In addition, try not to chat with your mobile phone, and be careful not to put your mobile phone on the pillow when you sleep. Don't hang it on your chest Many girls like to hang their mobile phones on their chests, but studies have shown that hanging them on their chests will have a certain impact on the heart and endocrine system. Even in the standby state with less radiation, the electromagnetic wave radiation around the mobile phone will cause harm to the human body. People with cardiac insufficiency and arrhythmia should pay special attention not to hang their mobile phones on their chests. Some experts believe that electromagnetic radiation will also affect endocrine function, leading to menstrual disorders in women. In addition, electromagnetic radiation will also affect normal cell metabolism, leading to the disorder of metal ions such as potassium, calcium and sodium in the body. Mobile phones are generally equipped with shielding equipment, which can reduce the harm of radiation to human body, and shielding equipment containing heavy metals such as aluminum and lead has better protection effect. However, for the sake of beauty, women often choose compact mobile phones, and the protective function of such mobile phones may not be perfect enough. Therefore, female friends had better not hang their mobile phones on their chests. Putting it in your trouser pocket will kill sperm. According to the British "Times" reported on June 28th, Hungarian scientists found that the number of male sperm who often carry and use mobile phones can be reduced by as much as 30%. Some medical experts pointed out that if the mobile phone is often hung on the waist or abdomen of the human body, the electromagnetic waves generated when it receives and sends signals will radiate to the sperm or eggs in the human body, which may affect the user's reproductive function. The British experimental report pointed out that mice irradiated by mobile phone microwave for 5 minutes will cause DNA damage; Long-term exposure of human sperm and eggs to microwave radiation from mobile phones may also cause DNA damage. Experts advise mobile phone users to keep their mobile phones as far away from their waist and abdomen as possible, and not to hang them around their waist or put them in their coat pockets. Some men put their mobile phones in their pants pockets, which is the biggest threat to sperm, because the pants pockets are next to the testicles. When the user is in the office, at home or in the car, it is best to put the mobile phone aside. When you go out, you can put your mobile phone in your purse and stay away from your body. Connecting a mobile phone with headphones can also effectively reduce the influence of mobile phone radiation. At present, the number of mobile phones in China has reached more than 654.38 billion. It is predicted that after 2002, the total number of mobile phones in China will surpass that in the United States. However, like any other country in the world, people who love mobile phones so much in China are not prepared for the health risks that mobile phones will bring them, or no one is willing to face up to this serious problem. A rare brain tumor is suspected to be caused by cell phone radiation. In the neurosurgery ward of 304 Hospital of PLA, the author met a patient with brain tumor. Professor Li Anmin, the chief physician of neurosurgery in the hospital and the treatment center of brain glioma in the capital, said that the patient suffered from a rare malignant brain tumor-scientific name "brain glioma"-which was suspected to be caused by long-term cell phone radiation. In the office of Professor Li of 304 Hospital, he made a specific introduction to the author. Li said that the patient is an official cadre in his forties. He has used his mobile phone for eight years and uses it frequently. He is used to answering his mobile phone with his left hand. About a year ago, the patient felt poor memory, dizziness and headache. After examination, a glioma the size of a goose egg was found in the parietal lobe of the left hemisphere of the patient's brain. Professor Li also said that in addition, ordinary gliomas are nodular and have clear boundaries like the moon; This patient's tumor is diffuse and ill-defined, just like rice mixed with sand. Professor Li concluded from this: "This is probably a glioma caused by cell phone radiation." In order to explain the cause more clearly, Professor Li picked up a skull specimen from the table and showed it to the author: "The part where the patient's tumor grows is precisely the area where the electromagnetic radiation of the mobile phone antenna is most concentrated, and under normal circumstances, glioma rarely occurs in this part." This mixture of brain tumors cannot be surgically removed, and the treatment is much more difficult than ordinary brain tumors. When I first came to 304 Hospital, the patient couldn't get out of bed and it was difficult to speak. After nearly 1 year of chemotherapy, the patient has greatly improved, but it is hard to say whether it can be cured.