Radiotherapy often causes tiredness. Other side effects will depend on the part of your body being treated.
Any treatment to your tummy (abdomen) can cause stomach upsets such as feeling sick (nausea), being sick (vomiting) or diarrhoea. Treatment to the head can cause hair loss. Radiotherapy to the neck can make your mouth or throat sore. You may also notice that some foods taste different.
The side effects can vary depending on how much treatment you have. Your hospital team will tell you what to expect.
Radiotherapy can have long-term side effects. These are rare and will vary depending on the part of the body treated. You can ask your specialist to tell you about any possible long-term effects.