As we age, our brain changes. Many people notice differences in how they think, remember, and process information, and it’s natural to wonder what these changes mean. How can you tell which changes are commonly associated with aging and which ones should be discussed with a healthcare professional?
Understanding the difference can help you feel more confident about your brain health and know how to get help when needed.
What happens in the brain as we age?
Cognitive health depends on several areas of the brain working together:
- Memory helps us store and recall information
- Attention allows us to focus
- Language lets us understand and use words
- Executive function helps us plan and make decisions
- Perception and spatial processing help us interpret the world around us
- Emotion regulation and social skills are key to interacting with others
- Processing speed lets us think and respond quickly on simple tasks
- Motor coordination helps us control our movements and balance
Healthy aging can bring gradual changes in processing speed, attention, and learning. You may need more time to learn new information, retrieve a word, or switch between tasks. At the same time, knowledge and skills developed over a lifetime often remain strong.
Changes that can occur with healthy aging
Occasional forgetfulness or the need for more time to recall information can occur with healthy aging. What matters is whether a change is persistent, worsening, noticeably different from your usual abilities, or interfering with everyday life. Poor sleep, stress, illness, or simply having an “off day” can also temporarily affect memory and attention. Examples of changes that can occur with healthy aging include:
- You might have trouble recalling a name, especially for someone you recently met, but remember it later
- Learning something new may take a bit more time than it used to
- You may misplace things now and then, but still be able to retrace your steps and find them
- Juggling several tasks at once may take more effort
- Finding the right words can take longer, especially when speaking on the spot
These experiences can be frustrating, but they do not necessarily indicate cognitive decline. With healthy aging, changes do not substantially interfere with conversations, independence, or familiar daily activities. Poor sleep, stress, or simply having an “off day” can make these moments more noticeable.
If these changes make you anxious or seem different from your usual self, consider talking with a healthcare professional. They can help you understand what may be typical, consider other possible contributors, and recommend appropriate next steps. Regular checkups are also an opportunity to discuss changes in your physical and cognitive health.
It’s also worth remembering that aging brings some great things. Some thinking skills often stay strong or even improve over time. This can include richer vocabulary or deeper knowledge built from years of experience.
Changes worth discussing with a healthcare professional
It can be difficult to tell when age-related changes deserve further attention. Consider talking with a healthcare professional when changes happen more often, worsen over time, differ noticeably from your usual abilities, or begin to interfere with daily life. Changes that may deserve evaluation include:
- Forgetting things more often than feels usual for you, not just now and then
- Missing appointments, social plans, or important dates you would normally remember
- Frequently losing track of conversations or having more and more trouble following a book, movie, or discussion
- Having trouble finding the right word more often than usual
- Finding it harder making decisions, finishing tasks, or following instructions that used to be easy
- Getting lost or confused in familiar places
- Making choices or judgments that seem unusual or unlike you
- Hearing from people close to you that they have noticed in your thinking or behavior
A single lapse is usually less concerning than a persistent or worsening pattern, particularly when it affects everyday activities. These changes can have many possible causes. If these changes sound familiar in you or someone else, talk with a healthcare professional. Evaluation can help identify potentially treatable contributors and determine whether monitoring, additional testing, support, or treatment is appropriate.
One cause of these changes is mild cognitive impairment. Mild cognitive impairment involves measurable changes in memory or other thinking abilities that are greater than expected for age. Having mild cognitive impairment does not mean that a person has dementia or will necessarily develop it, though those with mild cognitive impairment may be at an increased risk of developing dementia. A person generally remains independent in most daily activities, although tasks may require more effort, time, or compensatory strategies. The outcome depends partly on the underlying cause, which is why clinical evaluation and follow-up are important. Sometimes family members or friends notice changes before the person experiencing them does. Pay attention when familiar or personally meaningful activities become more difficult.
There are steps you can take to support your health, including staying physically active, eating a balanced diet, getting enough sleep, staying socially engaged, and managing medical conditions. Sudden confusion or a rapid change in attention, thinking, or behavior is not typical aging and may indicate an urgent medical problem. Seek prompt medical attention.
If you are concerned about your cognitive health
Older age is the strongest risk factor for cognitive impairment, but cognitive decline is not inevitable. Taking care of your overall health can support cognitive health and help you remain engaged in activities you enjoy. The goal is not to worry constantly, but to focus on practical steps that fit your life.
Talk with a healthcare professional about your concerns. They may recommend a brief cognitive assessment to evaluate memory and other thinking abilities. A brief assessment can identify patterns that may need further evaluation, but it does not by itself diagnose mild cognitive impairment, dementia, or the cause of a person’s difficulties. Some cognitive problems may be related to medication effects, poor sleep, mood symptoms, hearing loss, or other health conditions that can be addressed.
Healthy habits can benefit your body and brain at any age. Physical activity, a balanced diet, adequate sleep, social connection, and management of health conditions may all support cognitive health. Even small, consistent changes can be worthwhile, and it is never too late to begin.
What can you do now?
If you’re concerned about your brain health, there are practical steps you can take to support your overall and cognitive health:
- Stay active: Work toward at least 150 minutes of moderate-intensity activity each week, along with strength and balance activities. Start gradually and adapt activities to your abilities.
- Eat a balanced diet: Emphasize vegetables, fruits, whole grains, beans, nuts, fish, and other nutritious foods.
- Keep your health in check: Manage conditions such as diabetes, high blood pressure, and hearing or vision loss.
- Keep learning: Choose activities that are interesting, appropriately challenging, and enjoyable.
- Build your village: Stay socially connected by spending time with friends or joining a group.
- Prioritize sleep: Most adults need approximately 7 to 9 hours each night, although individual needs vary.
- Stay true to your purpose: Your purpose is what brings meaning to your life.
- Care for your mental health: Seek support for persistent stress, anxiety, depression, or other emotional concerns.
Final thoughts
Understanding the changes associated with aging and those which may need medical attention can help you take an active role in your health. If you notice a persistent or worsening change, especially one that affects everyday activities, talk with a healthcare professional. Evaluation can provide useful information, identify potentially treatable contributors, and help you determine appropriate next steps.
References
Livingston G, Huntley J, Liu KY, et al. Dementia prevention, intervention, and care: 2024 report of the Lancet standing Commission. The Lancet. 2024;404(10452). doi:https://doi.org/10.1016/s0140-6736(24)01296-0
Linus Health. Exploring Key Areas of Cognitive Function. Linus Health Blog. https://linushealth.com/blog/exploring-key-areas-of-cognitive-function. Published 2023. Accessed March 18, 2025.
Linus Health. Understanding Amyloid: Its Role in Brain Health and Alzheimer’s Disease. Linus Health Blog. https://linushealth.com/blog/understanding-amyloid. Published 2023. Accessed March 18, 2025.
Linus Health, Lynne Palmeri, and Megan Logan. Neuroscience 101. Unpublished manuscript, from the Linus Health Internal Certification Course. https://docs.google.com/document/d/1bAw8XzRXfNBXLEofNuUug5Dytt8KcGFP9oTdL87vGcI/edit?usp=sharing. Accessed March 18, 2025.
Together Senior Health and Linus Health. Keeping Your Brain Healthy and Happy. Unpublished file. https://drive.google.com/file/d/1MNMt_xrmUNxq5BQn4vQagXjgBH-_pmuO/view?pli=1. Accessed March 18, 2025.
Hoffmann C. Cognitive activity and the brain [video]. Sprout Films; 2023 Jun 24 [Accessed March 18, 2025]. Available from: https://vimeo.com/839364268/d5df3e174b
Alzheimer Society of Canada. Differences between normal aging and dementia. Alzheimer.ca. https://alzheimer.ca/en/about-dementia/do-i-have-dementia/differences-between-normal-aging-dementia. Accessed March 18, 2025.
Alzheimer Society of Canada. 10 warning signs of dementia. Alzheimer.ca. https://alzheimer.ca/en/about-dementia/do-i-have-dementia/10-warning-signs-dementia. Accessed March 18, 2025.
Harvard Health Publishing. A Guide to Cognitive Fitness. Harvard Health. https://www.health.harvard.edu/mind-and-mood/a-guide-to-cognitive-fitness. Published March 2020. Accessed April 29, 2025.
Dementia prevention, intervention, and care: 2024 report of the Lancet standing Commission
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(24)01296-0/abstract