RF-EMF radiation can cause DNA damage, tissue heating and can disrupt the blood-brain-barrier. emf radiation are real-world effects, and ARPANSA is actively involved within the EHS community, medical experts and researchers. ARPANSA will continue to review research on the health impacts of EMF radiation.
RF-EMF causes DNA damage
The exposure to electromagnetic fields created by humans (EMFs) is associated with DNA damage as well as health adverse effects. EMFs can affect the intracellular ionic concentrations that are essential to ensure the balance of electrochemical activity in cells. It can also alter the balance of cell metabolism, resulting to DNA damage. Moreover exposure to EMFs is also associated with an overproduction of free radicals as well as reactive oxygen species (ROS).
Exposure to RF-EMF radiation has been associated with changes in male germ cells' development. This is due to the development of germ cells into spermatozoa, aswell as functional maturation as the spermatozoa travel across the epididymis. To study the effects of RF-EMF on male germ cell development, a specially-built waveguide machine was designed to expose unrestrained mice to RF EME in the range of 2.2 W/kg.
In a recent study researchers have discovered that exposure to RF-EME caused an oxidative DNA damage to spermatozoa. Sperm DNA fragmentation was increased by 18% after a week of treatment, and by 23% after five weeks. Furthermore, DNA damage in mitochondria was observed by measuring the level of a biomarker, 8-hydroxy-2-deoxyguanosine (8-OH-dG).
Despite this, RF-EMF radiation is not yet considered a carcinogen. However, several studies have revealed that exposure to RF-EMF radiation can damage DNA health in range of cell types. In one of these studies, scientists subjected Vero cells with an EMF of 100 Hz for about 45 minutes. They evaluated DNA damage 48 hours after exposure to determine whether the exposure had a negative effect on DNA integrity.
RF-EMF causes tissue heating
Although the effects of RF-EMF are generally believed to have thermal origins, some studies have shown that non-thermal effects may also be present. These may be the reason for some of the unresolved observations in the epidemiological study of EMF hypersensitivity. It is therefore important to consider the non-thermal effects when conducting systematic reviews.
emf radiation symptoms -thermal effects from RF-EMF may be mediated by the cell membrane. This is an area where research has been thoroughly studied. Particularly the electrochemical behavior of cell membranes has been investigated. The current understanding is that energy generated by RF-EMF greater than 1 MHz is transmitted into the tissues through dielectric and ionic dissipation. Studies of the theory have suggested that the energy that is transferred to tissues could be up to 200 kV/m.
The electric properties of tissues are regulated through the distribution and composition of water molecules, and other molecules within the body. This determines how absorbent EMR RF is by various tissues. Organs with greater conductivity are likely to absorb more field and cause more of an effect. This is the reason why the amount of heat generated by tissue does not increase steadily between the outside and inside however, it is more prevalent in hot areas. Bone and fatty tissue are less susceptible to heating by RF than other tissues because they have a low water content.
The depth of the field's electromagnetic energy depends on the frequency and strength of field. Muscle tissue is more able to absorb field energy than other tissues and converts it into heat more efficiently. Usually the depth of penetration for RF EMF is determined by millimeters (mm). But, the greater the frequency, the shallower the penetration.
RF-EMF causes blood-brain barrier disruption
Researchers have discovered that RF-EMF could disrupt the blood-brain barrier changing sleep patterns as well as neurotransmitter levels. Furthermore the impacts on the effects of EMF on brain activity are associated with neurodegenerative disorders. For example, EMF from mobile phones could affect the electroencephalogram's activity and sleep patterns, as well as the actions of nitric Oxide and xanthin oxidase.
Researchers at Vienna University have studied the effects of RF-EMF exposure to brain cells. They also looked at how ELF EMFs on the nervous system. Although the cellular mechanisms that are involved aren't fully known but there is a clear connection between exposure to ELF-EMF and depletion of myelin. This relationship might account for the electro-hypersensitivity symptoms of electro-hypersensitivity. However, there are tested methods to regenerate myelin inside the brain.
Researchers have observed that exposure to frequencies of 900 millimeters EMF caused a rise in the permeability of the BBB and raised symptoms of neuronal damage in rats. They also observed increased extravasation of albumin to neurons. Furthermore, emf radiation discovered the following: after about 30 min of exposure at 900 MHz, 99mTc-MIBI increased its diffusion in the cortex. However, this effect did not occur when using Evans blue-based injections.
However, RF-EMF does not have a clear mechanism for disrupting the BBB. Research suggests that EMF exposure can increase erythrocyte membrane permeability, which could influence the BBB and also increase the efflux of calcium ions. Moreover, the presence of a 99mTc-MIBI radiotracer in the brain is also linked to an increase in the permeability of BBB.