Thinking and memory
Brain exercises for chemo brain
Puzzles, brain training apps and memory games are widely promoted for chemo brain. The evidence is limited: they may improve performance on the tasks practised, but benefits for everyday memory are less clear. Physical activity, sleep and practical strategies have better support. Enjoyable mental activity still has a place alongside them.
The short answer
Do brain exercises and puzzles help chemo brain?
Honestly, the evidence is limited. Brain training apps, puzzles, memory games and computer-based programmes are widely promoted for chemo brain, and some studies suggest they can improve performance on the specific tasks being practised and help people feel more confident. Whether that carries over into everyday memory, work and daily life is much less clear. They are unlikely to do harm, but they should not be relied on alone or bought at great expense.
The approaches with better support are more ordinary: regular physical activity, good sleep, managing mood and stress, and practical strategies such as notes and reminders. Structured rehabilitation programmes delivered by trained professionals, which combine education, strategy training and practice, show more promise than apps used alone. Enjoyable mental activities still have a place, as part of a wider approach.
Enjoyable activities are worth doing
Reading, crosswords, sudoku, learning a skill or music keep the mind engaged and can lift mood, even if the evidence for recovery is modest.
Be sceptical of big promises
Products claiming to reverse chemo brain or dramatically boost memory are not supported by strong evidence.
Combine with activity and sleep
Mental exercise works best alongside physical activity, sleep and strategies, not instead of them.
Ask your team whether a structured rehabilitation programme is available if thinking problems are significant.What the evidence suggests
How different approaches compare
- Brain training apps and games
- May improve the tasks practised and confidence, but benefits for everyday memory and work are uncertain. Inexpensive or free options are reasonable to try.
- Puzzles, reading and hobbies
- Keep the mind active and enjoyable. Evidence for recovery is modest, but they support wellbeing and engagement.
- Structured rehabilitation
- Programmes led by occupational therapists or psychologists combining education, strategy training and practice show more promise for daily functioning.
- Physical activity
- Among the approaches with the best support for improving thinking, energy and mood after cancer treatment.
- Sleep and managing tiredness
- Good sleep improves concentration and memory, and treating sleep problems often helps noticeably.
- Mindfulness and relaxation
- May help attention and reduce stress for some people, which can ease the impact of chemo brain.
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Using mental exercise sensibly
Part of a wider plan, not a quick fix.
Choose what you enjoy
Crosswords, sudoku, reading, learning a language, music or craft are more likely to be kept up than a programme that feels like a chore.
Good options
- Reading and discussing a book
- Learning a new skill or hobby
Keep sessions short
Short, regular sessions at your clearest time of day are better than long sessions that leave you mentally exhausted.
Avoid expensive programmes
Free or low-cost apps and everyday activities are reasonable. Be cautious about paying large sums for products with strong claims.
Be wary of
- Promises to reverse chemo brain
- Costly subscriptions or devices
Pair with physical activity
A daily walk or gentle exercise alongside mental activity supports both energy and thinking.
Ask about rehabilitation
If problems significantly affect work or daily life, ask whether occupational therapy or a cognitive rehabilitation programme is available.
Sudden confusion or disorientation · thinking problems that are rapidly getting worse · a severe new headache, especially with vomiting · a seizure · sudden weakness of an arm, leg or the face, or slurred speech · extreme drowsiness · confusion with fever. Go to the nearest emergency department and say clearly that the person is on or has had chemotherapy.
Being straight with you
What this page cannot tell you
It cannot tell you which specific app or programme will help you. Research is still developing, products change quickly, and individual responses vary. Your team or an occupational therapist can help you choose sensibly.
It also cannot promise that mental exercise will speed recovery. It may help some people feel sharper and more confident, but it should sit alongside activity, sleep, mood care and strategies.
Frustration is a sign to ease off
If puzzles or apps make you feel defeated or exhausted, stop or switch to something gentler. Stress can worsen concentration.
Treatable causes come first
Before focusing on brain training, ask whether low mood, poor sleep, thyroid problems, a low haemoglobin or medicines could be contributing.
Social activity counts too
Conversation, group activities and time with friends engage attention and memory in natural ways, and support mood.
Children may benefit from school support
For children affected by treatment, school-based support and educational assessment are usually more useful than commercial brain training products.
Track what helps
Note which activities leave you feeling sharper and which drain you, and adjust your routine accordingly.
Learning something new may help more than repeating drills
Activities that combine attention, memory and planning in real life, such as learning an instrument, cooking a new dish or joining a class, engage the mind in varied ways and often feel more rewarding than repeating the same app exercises.
Build activity into daily routines
Reading the newspaper aloud, planning the weekly shopping, keeping household accounts or teaching a grandchild a game all keep the mind working without needing a special programme.
Set realistic expectations
Progress with thinking after treatment is usually gradual. Judge success by whether daily life feels easier over months, not by scores in a game.
Mind games with family
Card games, carrom, chess, antakshari or word games with family combine memory, attention and conversation, and they add laughter and company to recovery. Shared activities are easier to keep up than solo drills, and relatives can quietly notice whether your thinking is improving over time.
Mix easy and challenging tasks
Choose activities that stretch you a little without leaving you frustrated. If a task feels too easy, add a small challenge; if it feels overwhelming, step back to something simpler and build up again slowly.
Pick your clearest time of day
Many people think most clearly in the morning. Using that time for reading, puzzles or learning makes the activity more rewarding and less tiring.
What to do next
Choose one or two enjoyable mental activities and keep sessions short. Combine them with daily physical activity and good sleep, avoid expensive products with big promises, and ask your team about rehabilitation if thinking problems are significantly affecting your life.
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Commonly believed
Four beliefs about brain training
They may improve practised tasks and confidence, but strong evidence that they reverse chemo brain in everyday life is lacking.
Very demanding exercises can cause frustration and fatigue. Enjoyable, moderate challenges are more sustainable.
Physical activity has some of the best support for improving thinking after treatment. Both can be part of your routine.
Cost does not reflect effectiveness. Free activities and structured professional rehabilitation are better choices than costly products with big claims.
Questions we are asked
Common questions about brain exercises
Do brain training apps help chemo brain?
They may improve performance on the tasks practised and boost confidence, but benefits for everyday memory and work are uncertain. They can be part of a wider plan.
Are crosswords and sudoku worth doing?
Yes, if you enjoy them. They keep the mind engaged and can lift mood, even though evidence for recovery is modest.
What has the best evidence?
Regular physical activity, good sleep, managing mood and practical strategies. Structured rehabilitation programmes also show promise.
Should I pay for a brain training programme?
Be cautious. Free or low-cost options are reasonable to try. Avoid expensive products that promise to reverse chemo brain.
What is cognitive rehabilitation?
A programme, usually led by an occupational therapist or psychologist, that teaches strategies and practice for memory and attention. Ask your team if it is available.
How often should I do mental exercises?
Short, regular sessions at your clearest time of day work better than long sessions. Stop if you feel frustrated or exhausted.
Can mindfulness help?
It may help attention and reduce stress for some people. Short guided sessions are an easy way to try it.
What else should I do alongside?
Stay physically active, protect your sleep, use practical strategies, and ask your team to check for treatable causes such as low mood or thyroid problems.
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Sources
- National Cancer Institute — Memory or Concentration Problems and Cancer Treatment
- American Cancer Society — Chemo Brain
- Macmillan Cancer Support — Changes in thinking and memory
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