Explanation:
The Earth itself is a source of terrestrial radiation. Radioactive materials (including uranium, thorium, and radium) exist naturally in soil and rock. Essentially all air contains radon , which is responsible for most of the dose that Americans receive each year from natural background sources.
The question here is...
Is natural radiation harmful?
However, at low doses of radiation, there is still considerable uncertainty about the overall effects. It is presumed that exposure to radiation, even at the levels of natural background, may involve some additional risk of cancer.
What is man made radiation?
Radiation used in medical applications is the largest source of man-made radiation that people in the industrialized countries are exposed to. ... The majority of this exposure is from diagnostic X-rays , which are used by physicians to determine the extent of disease or physical injury.
Exposure to very high levels of radiation, such as being close to an atomic blast, can cause acute health effects such as skin burns and acute radiation syndrome (“radiation sickness"). It can also result in long-term health effects such as cancer and cardiovascular disease.
So i think it actually depends on how Much the exposure is for natural radiation....but man made is outrightly dangerous..
