Electromagnetic fields have been present in human life since humans appeared on earth, as they are present in the environment. The development of technology has led to the creation of many artificial sources of PEM, whose radiation, can have adverse effects on human health. There is a lot of literature that indicates a link between PEM and the development of diseases such as cancer, heart disease or diseases of the nervous system. However, there are currently no studies indicating the harmful effects of PEM, which does not change the fact that we are protected as to the radiation standards that individual devices may emit.