Abstract. This labour consider the impact of mobile phones, which are part of wireless communication systems, on the human body, as well as the effects of electromagnetic radiation during mobile communication. The labour presents statistical data on mobile phone usage and the types of diseases associated with this usage. A model of the human body was created, and the effects of electromagnetic radiation processes in mobile communication were demonstrated on that model. Additionally, calculations were performed according to international standards for the calculation of electromagnetic radiation. Consequence of the research, the dielectric permittivities of brain tissues in the human head at frequencies of 900 and 1800 MHz were compared using SAM mannequins. Additionally, 3D models of the objects under study were created using the CST STUDIO SUITE software, and the impact of electromagnetic radiation on the human head was analyzed based on these models.
The relevance of this article is due to the increasing number of electromagnetic field (EMF) sources, which raises the risk of their impact on humans. Household electrical networks, domestic appliances, video display terminals, power transmission lines, communication and information television and radio devices, radar and navigation stations are just a part of a list of sources emitting EMF at various frequencies, modulations, and intensities. The majority of the population is actually exposed to very high levels of EMF, which are millions of times stronger than the natural magnetic field. Electromagnetic radiation significantly influences the development of pathological reactions in the body. This, in turn, directly leads to a decline in human health. Therefore, understanding the extent of mobile phone effects on the human body and educating the public about its harmful aspects is a key objective.

Keywords: electromagnetic radiation, mobile phone, dielectric conductivity, electromagnetic field, frequencies, modulations, radar.