Which of the EM waves are harmful?

In 2020, WHO updated its international ICNIRP Guidelines for limiting exposure to larger RF electromagnetic fields ranging from 100 KHz (kilohertz) to 300 GH (gigahertz) .

The issue of extremely low frequency (ELF) biological effects is very controversial. Research has focused on possible carcinogenic, reproductive, and neurological effects . Other suggested health effects include cardiovascular, brain and behavior, hormonal and immune system changes.

In the past 30 years the concern that daily exposure to extremely low-frequency magnetic fields (ELF-EMF) (1 to 300 Hz ) might be harmful to human health (cancer, neurobehavioral disturbances, etc) has been the object of debate, and has become a public health concern.

Some recent epidemiologic studies have suggested that the exposure to extremely low frequency (ELF) electromagnetic fields (EMF) affect human health, because of the incidence of certain types of cancer, depression, and miscarriage have been increased among individuals living or working in environments exposed to such …

Despite extensive research, to date there is no evidence to conclude that exposure to low level electromagnetic fields is harmful to human health . The focus of international research is the investigation of possible links between cancer and electromagnetic fields, at power line and radiofrequencies.4 Ağu 2016

The most dangerous frequencies of electromagnetic energy are X-rays, gamma rays, ultraviolet light and microwaves . X-rays, gamma rays and UV light can damage living tissues, and microwaves can cook them.

ELFs can affect the activity of brain neurons and thereby, interfere with brain waves as proved in extensive research on human and animal models. ELFs can reduce or increase the amplitude of different brain waves depending on their frequencies.