Nausea and vomiting are side effects of cancer therapy and affect most patients who have chemotherapy. Radiation therapy to the brain, gastrointestinal tract, or liver also cause nausea and vomiting.
Nausea is controlled by a part of the autonomic nervous system which controls involuntary body functions (such as breathing or digestion). Vomiting is a reflex controlled in part by a vomiting center in the brain. Vomiting can be triggered by smell, taste, anxiety, pain, motion, or changes in the body caused by inflammation, poor blood flow, or irritation to the stomach.
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Jai Hind