The usage of ionization radiation in cancer treatment is known as Radiation Oncology. Chemotherapy and radiation therapy are used as a combination to treat tumor. It also helps reduce the tumor burden. Radiation therapy has some side effects, categorized into immediate and late side effects. The immediate side effects are vomitting, intestinal discomfort, swelling, infertility etc., The late side effects include fibrosis, epilation, heart diseases etc., Sometimes radiation enteropathy is also experienced by patients. Hormonal imbalances may also occur due to this therapy. Cancer metabolomics is an important tool for cancer detection and treatment. Cancer case reports show evidence for the effectiveness and side effects of radiation therapy. Cancer Science Conference discloses the recent innovations in cancer therapy field.