<human>:  What are the most common side effects of chemotherapy?
<bot>: The most common side effects of chemotherapy include fatigue, nausea, vomiting, loss of appetite, hair loss, increased risk of infection, mouth sores, or changes in taste or smell. Other side effects depend on the specific drugs and may include changes in blood cell counts, digestive issues such as diarrhea and constipation, nerve or muscle problems, and skin or nail changes.