Radiation therapy, also called radiotherapy, involves the use of high-energy rays to kill cancer cells. It affects the cancer cells only in the treated area. The risk factors are of two types, genetic and environmental. About 7 percent of ovarian cancer cases are linked to a genetic predisposition for the disease. Researchers have identified certain genes that, when mutated, increase a woman's risk for ovarian cancer.
Tests are available to determine whether someone has a genetic predisposition to the disease.
A procedure called prophylactic oophorectomy is recommended in order to remove both ovaries and reduce cancer risk. However, this method does not totally eliminate ovarian cancer risk. Other demerits are that it advances the onset of menopause and has a negative effect on a woman s quality of life. Environmental causes also play a part in aggravating the risk of ovarian cancer. Some studies have reported a link between the use of fertility drugs and ovarian cancer.