Fatigue is the most common side effect of cancer and cancer treatments. Fatigue from chemotherapy is different from normal tiredness or being run down. This type of fatigue makes you feel overwhelmingly tired throughout your whole body. It is often not relieved by rest or sleep. Performing your daily activities may be very difficult or even impossible.

Cancer fatigue may be caused by several things or a combination of different factors. The most common causes are anemia (low red blood cell counts), pain, insomnia, emotional stress and low thyroid levels.

It is important that you tell your healthcare team if you feel fatigued. They may be able to offer helpful suggestions on managing cancer-related fatigue and evaluate its underlying cause. When you see your doctor, consider asking the following questions.

• Will the cancer therapy I'm receiving cause fatigue, and, if so, how severe will it likely be?
• Are there any effective treatments to control or relieve my fatigue?
• What can be done if the treatment doesn't help?
• What are the probable side effects of the treatments you propose?
• Can other healthcare team members help me manage my fatigue?
• Is my fatigue caused by anemia, and if so, how will it be treated?

What you can do

• Keep a journal. Write down when you are most tired and when you have energy. Plan to do activities you enjoy at those times that you usually have energy.
• Prioritize. Do the important things first.
• Exercise. Gentle exercise such as walking can be helpful. Ask your healthcare team about exercises that might be right for you.
• Conserve your energy. While doing daily chores, try to find ways that make them easier, such as sitting down to prepare food.
• Eat well and drink plenty of water.
• Keep a regular sleep routine. Save your longest sleep for night-time. Take only short naps or rest periods during the day.
• Take care of yourself both emotionally and physically. Limit visitors or length of visits.
• Restore your mind. Try activities to distract you from your treatment, such as listening to music, watching TV or meditating.

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