The impact of unnatural radiation on the human body is evaluated by the authorities (government and decision-makers) based on an increase in body temperature. Radiation causes heat, which can raise the body temperature. The authorities consider a local temperature rise that does not exceed 1 degrees Celsius to be safe for humans. So if you keep your mobile phone half a cm from the ear while making a call and the temperature of your cells in your ear does not rise more than 1 degrees Celsius, then calling with a mobile phone is healthy according to the EU guidelines. Underfloor heating or the sun would be declared unhealthy when evaluated this way. This method does not look at any other biological changes in the body that may be caused by radiation.
Professor Dr. Martin Pall, emeritus professor of Biochemistry and Basic Medical Sciences at Washington State University, has conducted many studies on this topic. He discovered several neurological disorders related to non-harmonic EMF radiation, including sleep disturbances, headaches, fatigue, symptoms of depression, restlessness and stress (Prof. M. Pall, Journal of Chemical Neuronatomy, 2016). Unnatural radiation, the electromagnetic fields created by humans, causes a significant imbalance in the natural EMF of the human body. More than 30 studies have demonstrated the negative impact of non-natural EMF on people.