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Radiation Exposure Limits

Japan Radiation Exposure Limits Thyroid Cancer and Other Health Risks

Radiation Exposure and Cancer What is radiation?

Radiation is the emission (sending out) of energy from any source. X-rays are an example of radiation, but so is the light that comes from the sun and the heat that is constantly coming off our bodies.

When talking about radiation and cancer, many people think of specific kinds of radiation such as x-rays or the radiation made by nuclear reactors. But there are different types of radiation, and many of them are not linked to cancer.

Types of radiation

Radiation exists across a spectrum from very high-energy (high-frequency) radiation to very low-energy (low-frequency) radiation. This is sometimes referred to as the electromagnetic spectrum. From highest to lowest energy, the main forms of radiation are:

* Gamma rays * X-rays * Ultraviolet (UV) rays * Visible light * Infrared rays * Microwaves * Radiofrequency (radio) waves * Extremely low-frequency (ELF) radiation