Ionizing radiation in life mainly exists in security inspection, X-ray, CT detection and radiotherapy, and is mainly used in medicine. Most of the radiation we are exposed to in our daily life belongs to low-frequency non-ionizing radiation, which is relatively safe, but whether long-term exposure is harmful to health is also controversial.
Extended data:
Statistics show that from 65438 to 0982, the average annual medical radiation dose received by Americans was about 0.5mGy, and in 2006, this figure increased to 3mGy. Similar patterns exist in other high-income countries: in the past 25 years, the number of diagnostic methods using radiation in Britain has more than doubled, while that in Australia has tripled.
At present, the research on the correlation between radiation and cancer is mainly aimed at acute high-dose radiation. Long-term or repeated low-dose radiation is more relevant to the public, but there is still great uncertainty in the scientific community about the relationship between low-dose radiation and cancer.
Some people think that radiation below a certain threshold is harmless, some even think that appropriate weak radiation is good for human body, and others are keen on soaking radon hot springs containing radioactive element radon.
People's Daily Online-Investigation shows that long-term low-dose radiation can also cause cancer.