Radiation is a type of energy that comes from the sun and from man-made sources like power plants, medical tools, and nuclear weapons. our bodies are constantly exposed to it in both small and large doses. The epigenome is the set of all chemical tags that tell our cells which genes should be turned on or off.
When you are exposed to radiation, it can change the chemical tags on your genes. This can cause your cells to turn on or off different genes than normal, causing changes in the way your body works. For example, radiation can change how your body reacts to disease, or how your skin reacts to sunshine. If radiation damages enough genes in the same area, it can even cause cancer.