what cancer causes of nausea and vomiting
For people with cancer, nausea and vomiting may be caused by the following: 1  Chemotherapy. 2  Radiation therapy, especially to the brain, spinal cord, abdomen, and pelvis. 3  Cancer that has spread to the brain. 4  Blocked intestines, also called bowel obstruction. 5  Electrolyte imbalance, which is the loss of minerals such as potassium and sodium in the body.