What are the disadvantages of electromagnetic waves to human body and how to avoid them?

Harm of electromagnetic waves to human body How electromagnetic waves affect human body mainly depends on several factors, one is the wavelength (or frequency) of radiated electric waves, the other is the power absorbed by human body, and the third is the length of radiation time. Generally speaking, the shorter the wavelength of electromagnetic waves, the greater the power absorbed by the human body, and the longer the time it is irradiated by electromagnetic waves, the greater the impact on the human body, and vice versa. The experimental research and investigation results show that the harm of electromagnetic radiation to health is multifaceted and complicated, and the main harm is as follows: 1. Harm to the central nervous system The nervous system is very sensitive to the influence of electromagnetic radiation. After repeated exposure to its low intensity, the central nervous system function changes, resulting in neurasthenia syndrome, mainly manifested as headache, dizziness, fatigue, memory loss, sleep disorders (insomnia, dreaminess or drowsiness), daytime dozing and so on. Palpitation, chest tightness, hair loss, etc. In particular, difficulty in falling asleep, weakness, hyperhidrosis and memory loss are more prominent. All these indicate that the brain is dominant in the process of inhibition. Therefore, in addition to the above symptoms, the victim also showed short-term memory loss and prolonged visual motor reaction time. The poor coordination between hand and brain shows that the speed of marking numbers is slow and there are many mistakes. How to prevent electromagnetic diseases In order to prevent electromagnetic waves from harming the human body, firstly, we should keep a certain distance from electrical appliances. The farther away from electrical appliances, the less electromagnetic waves. For example, the distance between color TV and people should be 4-5 meters; The distance from the fluorescent tube should be 2-3 meters. Second, some household appliances that are prone to electromagnetic waves, such as radios, televisions, computers, refrigerators, etc. , should not be placed in the bedroom. In addition, use mobile phones as little as possible, don't activate multiple household appliances at the same time, and don't use them for too long or too frequently.