Two major hazards of electromagnetic radiation to the human body
heat effect
More than 70% of the human body is water, and water molecules rub against each other after being exposed to electromagnetic radiation, causing the body to heat up and affecting the normal functioning of internal organs. Elevated body temperature can cause various symptoms, such as palpitations, dizziness, insomnia, bradycardia, decreased white blood cells, decreased immune function, and decreased vision. The electromagnetic wave power density required to generate thermal effects is 10MW/CM2; Microscopic heating effect 1 MW - MW/CM2; The shallow thermal effect is below 10MW/CM2. When a microwave with a power of 1000W is directly irradiated on a person, it can cause death within a few seconds.
Non thermal effects
The organs and tissues of the human body all have weak electromagnetic fields, which are stable and orderly. Once disturbed by external electromagnetic fields, the weak electromagnetic fields in equilibrium will be destroyed, and the human body will also suffer damage. This is mainly caused by the influence of low-frequency electromagnetic waves, that is, after the human body is exposed to electromagnetic radiation, the body temperature does not significantly increase, but it has already interfered with the inherent weak electromagnetic field of the human body, causing changes in blood, lymph, and cell protoplasm, posing serious harm to the human body, and can lead to fetal malformations or natural miscarriage in pregnant women; Affects the circulatory, immune, reproductive, and metabolic functions of the human body.
The non thermal effects on the human body are reflected in the following aspects:
1. Neurosystem: After repeated exposure to electromagnetic radiation, the central nervous system and other functions of the human body undergo changes. If conditioned reflex activity is inhibited, bradycardia may occur, etc.
2. Sensory system: Low intensity electromagnetic radiation can cause a decrease in human olfactory function. When a person's head is exposed to low-frequency, low-power sound pulses, it will make them hear sounds like machines, insects, or birds chirping.
3. Immune system: Preliminary observations have been made in China that compared to normal individuals of the same age, people who have been exposed to low-intensity microwaves for a long time have a decrease in immunoglobulin 1gG in their body fluids and cellular immune indicators, and a decrease in the product of T cell wreath and lymphocyte conversion rate, leading to a decrease in the immune capacity of the body fluids and cells.
4. Endocrine system: Low intensity microwave radiation can cause dysfunction of the thalamus pituitary adrenal gland in humans; The activity of CRT and ACTH increases, significantly affecting endocrine function.
5. Genetic effects: Microwaves can damage chromosomes. Animal experiments have found that; Using microwaves of 195MHz, 2.45GHz, and 96Hz to irradiate mice can result in chromosomal defects in 4-12% of spermatogonial bone formation. Mice that inherit these chromosomal defects can cause intellectual disability and shortened life expectancy in injured individuals.
Cumulative effect
After the thermal and non thermal effects act on the human body, the damage to the body has not yet been self repaired (usually referred to as the human body's internal resistance). If it is exposed to electromagnetic radiation again, the degree of damage will accumulate and eventually become a permanent illness, endangering life. For groups exposed to electromagnetic radiation for a long time, even if the power is very small and the frequency is very low, it may trigger unexpected lesions, which raises awareness.
In its newly published (2007) Environmental Health Standards Extreme Low Frequency Electromagnetic Fields monograph, WHO emphasizes that although the biological effects of low-intensity environmental electromagnetic radiation have not been elucidated, it cannot be ruled out that low-intensity environmental electromagnetic radiation can have harmful health effects. Meanwhile, due to the ubiquitous presence of electromagnetic radiation, almost everyone in the world is exposed to it. Therefore, even if its impact on human health is minimal, it will have a huge impact on human public health; If one of the health effects is irreversible (such as tumors), the economic and health losses it causes will inevitably be painful.
