How to Improve Focus and Memory: A Starting Guide
A starting guide to focus and memory: what has support (sleep, routines, study methods), what is mixed, what is unproven, and when a change in thinking needs a doctor.
Content last updated . This page has not been medically reviewed.
Start with what you are noticing
"Focus" and "memory" are different things, and the best first steps depend on which one is giving you trouble. Trouble starting or sustaining attention, getting distracted or feeling foggy points to one set of causes; forgetting recent conversations or where things are points to another. See how attention and memory work for the basics.Evidence labels on this page: established recommendation, promising but limited, mixed, insufficient evidence. This guide is educational and cannot diagnose a cause.
What the sources support
| Approach | What the sources found | Label |
|---|---|---|
| Enough sleep | A good night's sleep helps you learn, create new memories and pay attention; the NIA says adults need about seven to nine hours. [1] A meta-analysis of 44 studies found one night of restricted sleep impaired sustained attention. [2] | Established recommendation |
| Routines and memory tools | The NIA suggests a daily routine, to-do lists, calendars and notes, and keeping keys, phone and glasses in the same place. [3] | Practical advice |
| Study by testing yourself | Students who practiced recall remembered more after two days and a week than students who re-read, in lab experiments. [4] | Promising but limited (short experiments) |
| Planned breaks | A study of students found planned breaks (24 minutes of study, 6 of break) gave mood benefits and similar task completion versus choosing break times yourself. [5] | Promising but limited |
| Physical activity | The NIA calls the evidence for preventing decline "encouraging but inconclusive." [6] A 2015 Cochrane review found no cognitive benefit in healthy older adults. [7] | Mixed |
| Treating hearing loss | In the ACHIEVE trial, hearing aids did not reduce 3-year cognitive decline overall. [8] | Mixed |
| Brain-training games | Gains tend to stay with the trained task. [9] | Mixed to insufficient for daily life |
| Memory supplements | No supplement has been proven to prevent dementia, and evidence for focus and memory is limited. [6] | Insufficient evidence |
A simple first month
- Protect sleep. See Better Sleep and Sleep hygiene.
- Use outside memory. Calendars, notes and lists; one place for keys and phone. [3]
- Cut interruptions. Heavy media multitaskers were more easily distracted by irrelevant information in one study, though that kind of study shows association, not cause. [10] See Focus habits.
- Move, connect and eat regularly. The NIA includes exercise, eating well, spending time with friends and family and limiting alcohol among its tips. [3] See Brain-healthy habits.
- Manage stress and low mood. Stress, anxiety and depression can cause memory loss, often treatable. [11] See How to relieve stress.
Caffeine
Caffeine can be part of a healthy diet for most people, but too much can have negative effects and sensitivity varies. [12] A review of plant-derived substances concluded that caffeine enhances attention and executive functions. [13] For how caffeine relates to sleep, see Caffeine, alcohol, nicotine and sleep.When it is something else
Trouble concentrating can come from sleep problems, anxiety, depression, an underactive thyroid, B12 deficiency and some medicines. [14][15][16] In adults, ADHD is another possibility; see ADHD in adults. For fuzzy thinking, see brain fog.When to get help
See a doctor if memory problems keep happening or affect daily life. [11] Sudden confusion needs urgent care. See when to get help. Before using supplements, read nootropics and memory supplements and how interactions work.Frequently asked questions
How can I improve my concentration?
Start with sleep, fewer interruptions, planned breaks and checking for medicines, mood or health causes. [1][5][14]
How can I improve my memory?
Use routines, calendars and notes, stay active and socially connected, and sleep well. [3]
Do brain games make me smarter?
They improve performance on the trained tasks; evidence for everyday benefit is limited. [9]
Is a supplement worth trying?
Evidence is limited, and supplements can interact with medicines. [6][17]
References
- National Institute on Aging, Sleep and Older Adults. Read 2026-10-22.
- Sleep Med Rev 2024. Impact of one night of sleep restriction on sleepiness and cognitive function: a systematic review and meta-analysis. Read 2026-10-22.
- National Institute on Aging, Memory Problems, Forgetfulness, and Aging. Read 2026-10-22.
- Roediger HL, Karpicke JD. Psychol Sci 2006. Test-enhanced learning: taking memory tests improves long-term retention. Read 2026-10-22.
- Biwer F et al. Br J Educ Psychol 2023. Understanding effort regulation: comparing 'Pomodoro' breaks and self-regulated breaks. Read 2026-10-22.
- National Institute on Aging, Preventing Alzheimer's Disease: What Do We Know?. Read 2026-10-22.
- Young J et al. Cochrane Database Syst Rev 2015. Aerobic exercise to improve cognitive function in older people without known cognitive impairment. Read 2026-10-22.
- Lin FR et al. Lancet 2023. Hearing intervention versus health education control to reduce cognitive decline in older adults with hearing loss in the USA (ACHIEVE). Read 2026-10-22.
- Simons DJ et al. Psychol Sci Public Interest 2016. Do "Brain-Training" Programs Work?. Read 2026-10-22.
- Ophir E, Nass C, Wagner AD. PNAS 2009. Cognitive control in media multitaskers. Read 2026-10-22.
- NHS, Memory loss (amnesia). Read 2026-10-22.
- US Food and Drug Administration, Spilling the Beans: How Much Caffeine is Too Much?. Read 2026-10-22.
- Crit Rev Food Sci Nutr 2023. Plant-derived nootropics and human cognition: a systematic review. Read 2026-10-22.
- NHS, How to get a dementia diagnosis. Read 2026-10-22.
- NHS, Underactive thyroid (hypothyroidism) symptoms. Read 2026-10-22.
- NHS, Vitamin B12 or folate deficiency anaemia. Read 2026-10-22.
- NCCIH, Dietary Supplements and Cognitive Function, Dementia, and Alzheimer's Disease: What the Science Says (July 2022). Read 2026-10-22.
Education, not medical advice. This page is for general information. It does not diagnose or treat any condition and is not a substitute for care from a qualified health professional. Natural does not automatically mean safe. Ask a clinician or pharmacist before changing your care, especially if you take medication, are pregnant or breastfeeding, or have a health condition.