How Does Radiation Therapy Work?
Radiation Therapy works because the radiation destroys the cancer cells' ability to reproduce.
Radiation works by creating damage in the DNA of cells within the treatment area. Cancer cells grow and divide more rapidly than many of the normal cells around them. High doses of radiation keep cancer cells from growing and dividing because they are unable to repair the damage done to the DNA during radiation. Although normal cells are affected by radiation, most normal cells are able to repair the damage done by radiation and continue to function.