We all feel fatigue at times, but fatigue for people with cancer is different. It is often chronic (long-lasting) and can persist for months or even years after treatment ends. Most people return to normal energy levels within 6 to 12 months, but for some, it can take longer.
Radiotherapy and Fatigue
Tiredness is a very common side effect of radiotherapy, especially over long treatment courses. This happens because:
- The body is working hard to repair healthy cells damaged during the process.
- Treatment can cause anaemia (low red blood cell levels).
You may feel weak or lack the “get-up-and-go” for daily tasks. This usually peaks a few weeks after treatment ends before gradually improving. Small amounts of light exercise, when possible, have actually been shown to help reduce this specific type of tiredness.
Fatigue is Very Real
Fatigue affects between 70% and 90% of people with cancer. It is often described as the most disruptive side effect of all. It is not “all in your head”—it is a recognized medical symptom that doctors and researchers are now prioritizing.
Learning to Manage Your Energy
Think of your energy like a battery that needs careful budgeting. Here are practical ways to save energy in your daily life:
Personal Care
- Sit down to dry off after a bath or use a towelling dressing gown.
- Get dressed sitting down; lay clothes out in one place beforehand.
- Wear loose-fitting clothes with fewer buttons.
- Rest your foot on your opposite knee to put on shoes (avoids bending).
Household Tasks
- Place “rest chairs” around the house so you can stop easily.
- Sit down to peel vegetables, wash up, or iron.
- Use a duster on a long stick so you don’t have to reach or lean.
- Shop online or go when stores are quiet.
Family & Support
- Play “low-energy” games with children (puzzles, reading, drawing).
- Accept help with housework, shopping, or school runs.
- Keep nutritious snacks ready to avoid long meal prep.
- Don’t cut out the things you enjoy—they help you relax.
