As we know, every treatment associated with cancer has its own set of side effects. In Radiotherapy, high doses of radiation beams kill the cancerous cells in and around the tumor. The side effects of radiotherapy emerge as they damage the healthy tissues around the treatment area. As Radiotherapy has advanced by leaps and bounds in the last 20 years, the severity of side effects has reduced a lot. However, the severity of the side effects also differs from patient to patient. Some patients experienced more side effects, and on the other hand, some patients experienced few or none of the side effects. Your radiation oncologist will weigh the benefits of any treatment option against the side effects and determine what is best for you. It is important to make sure that you inform your radiation oncologist about any side effects you are experiencing, be it minor or major. This is because they will help you cope with it and make things easier for you by adjusting the doses of radiation. Some side effects of radiotherapy are Anemia, Depression, Fatigue, Hair Loss, Skin Problems, etc.