When the human body is in an electric field, the conductivity of the human body makes the current flow into the earth through the skin, and the magnetic field may affect the iron molecules in the blood when passing through the human body. The electric field passing through the skin may cause skin diseases such as eczema. Some people say that women who often use computers are prone to skin aging. Similarly, people realize that electromagnetic waves are more harmful to tissues with rapid cell proliferation, such as blood cells, genitals and lymph, and to children. Let's take the influence of magnetic field on human body as an example to see the harm of electromagnetic wave. When the human body is in a strong magnetic field, various magnetic substances in the body will be attracted by magnetic force. At the same time, due to magnetic induction (the object forming a magnetic field magnetizes other objects), magnetization occurs, that is, magnetic objects such as iron (Fe) in red blood cells in the body are attracted or magnetized, thus affecting other magnetic substances. Obviously, this will be harmful to health. If there are magnetic substances in blood or cells, magnetic induction will hinder the normal activities of blood and cells. The accumulation of heavy metals in the body and the susceptibility to magnetic induction give a fatal blow to the body. However, it is difficult to find out the influence of electromagnetic waves on human body scientifically and carefully. Because various environmental factors act on people comprehensively, it is difficult to do long-term follow-up investigation. The influence of electromagnetic waves on human body has been confirmed by epidemiological investigation and animal experiments.
Various animal experiments show that electromagnetic waves (1) change nerve conduction substances (2) change the calcium content in cells and cell surfaces of chickens, pigs and mice, leading to fetal malformation and malignant lymphoma (3) reduce the reaction ability of mice, reduce the weight of testicles, change the chemical composition of the brain and slow down the growth rate of the body. The third point will especially affect the delivery of pregnant women and the growth of children. The influence of electromagnetic wave on human body can be roughly divided into thermal effect, stimulating effect and non-thermal effect.
Whether long-term low-frequency electromagnetic waves affect health has become the focus of debate on the harmful theory of electromagnetic waves. The harm of strong electromagnetic waves to human body has been scientifically verified, so all countries in the world have stipulated the maximum time limit of exposure to electromagnetic fields to protect human health.
The harm of strong magnetic field to human body is still relatively great. If we can't pay more attention to avoid it in peacetime, then our health will be greatly threatened. Therefore, in our daily life, we must try our best to live in an environment with less radiation, which is the most secure for our health and can also make diseases happen less.