Discover 10 often-overlooked warning signs of dementia, from subtle memory changes to difficulty with familiar tasks, plus simple daily habits that may help protect brain health.
Introduction
When most people think about dementia, they picture severe memory loss or someone forgetting the names of people they love. But cognitive changes can sometimes appear in much subtler ways.
Dementia is not a normal part of aging. Early symptoms can affect memory, communication, judgment, problem-solving, behavior, and the ability to complete familiar activities.
Recognizing changes early doesn’t necessarily mean that dementia is the cause. Memory and thinking problems can also result from certain medications, vitamin deficiencies, thyroid problems, and other treatable conditions. That’s why persistent or worsening changes deserve a conversation with a healthcare professional.
Here are 10 signs that are easy to overlook—and practical ways to support your brain every day.
1. Repeating the Same Questions or Stories
Everyone forgets things occasionally. However, repeatedly asking the same question or telling the same story within a short period may be more concerning when the person doesn’t remember having already asked or shared it.
The key difference is whether the problem is becoming frequent enough to interfere with everyday life.
2. Struggling With Familiar Tasks
Someone who has comfortably managed familiar activities for years may suddenly have difficulty completing them.
This could include trouble following a favorite recipe, operating a familiar appliance, managing routine shopping, or navigating a regular journey. Difficulty completing familiar tasks is among the recognized warning signs of Alzheimer’s disease.
3. Getting Lost in Familiar Places
Occasionally taking a wrong turn happens to everyone. But becoming confused in a neighborhood or location that has been familiar for years can be a more significant warning sign.
Changes in spatial awareness and the ability to recognize or navigate familiar environments can occur with dementia.
4. Difficulty Finding the Right Words
Everyone experiences the occasional “tip-of-the-tongue” moment.
A more concerning pattern may involve increasingly frequent difficulty finding common words, using unusual words for familiar objects, or struggling to follow or participate in conversations. Language and communication problems are recognized cognitive symptoms that can occur with dementia.
5. Increasing Trouble With Planning or Money
Managing household finances, paying bills, organizing appointments, or following a familiar plan can require considerable attention and problem-solving.
Unexpected difficulty with tasks that once seemed routine may be worth monitoring. Problems with planning and solving problems are among the recognized warning signs of Alzheimer’s disease.
6. Misplacing Things and Being Unable to Retrace Steps
Losing your keys occasionally isn’t necessarily a sign of dementia.
A more concerning pattern is frequently putting objects in unusual places and being unable to retrace your steps to find them. This differs from simply forgetting where something was placed.
7. Changes in Judgment or Decision-Making
Unexpected changes in judgment can sometimes be overlooked, especially when they develop gradually.
Examples may include unusual financial decisions, neglecting personal safety, or making choices that are significantly different from the person’s normal behavior.
Poor judgment is one of the recognized warning signs associated with Alzheimer’s disease.
8. Losing Interest in Social Activities
A person who once enjoyed meeting friends, attending community activities, hobbies, or family gatherings may gradually withdraw.
Social withdrawal can have many causes—including depression, loneliness, hearing problems, physical illness, or stress—so it should not automatically be interpreted as dementia. However, withdrawal from work or social activities is among the warning signs that can accompany Alzheimer’s disease.
9. Unexpected Changes in Mood or Personality
Subtle changes in personality may sometimes be easier for family members to notice than memory problems.
Someone may become unusually anxious, suspicious, irritable, fearful, confused, or socially withdrawn. Changes in mood, personality, or behavior can occur alongside cognitive symptoms.
10. Problems With Time, Place, or Visual Information
Another overlooked sign is increasing confusion about dates, seasons, locations, or the sequence of events.
Some people may also experience difficulty interpreting visual information or spatial relationships. These changes can affect activities such as navigating unfamiliar spaces or judging distances.
What Should You Do If You Notice These Signs?
Having one of these symptoms does not automatically mean someone has dementia.
What matters is the pattern: Are the changes becoming more frequent? Are they getting worse? Are they interfering with work, relationships, safety, finances, or everyday activities?
If the answer is yes, schedule an appointment with a healthcare professional. An evaluation can help determine whether the changes are related to dementia or another condition that may be treatable. Early assessment can also help with treatment and future planning when dementia is diagnosed.
How to Protect Your Brain Every Day
There is no guaranteed way to prevent dementia, but research indicates that several modifiable health and lifestyle factors can influence dementia risk.
1. Keep Moving
Regular physical activity supports cardiovascular and overall health. The CDC recommends adults aim for at least 150 minutes of moderate physical activity each week, when appropriate for their health and abilities.
Walking, cycling, swimming, dancing, gardening, and other enjoyable activities can all help you stay active.
2. Manage Blood Pressure and Blood Sugar
High blood pressure and poorly controlled diabetes can affect blood vessels and brain health.
Work with your healthcare professional to monitor and manage these conditions rather than waiting until symptoms develop.
3. Don’t Ignore Hearing or Vision Problems
Hearing loss is an important modifiable risk factor for dementia, while the 2024 Lancet Commission also identified untreated vision loss as a potentially modifiable risk factor. Appropriate testing and treatment can therefore be an important part of healthy aging.
4. Avoid Smoking and Limit Alcohol
Smoking is associated with increased dementia risk, while excessive alcohol consumption can contribute to health problems that affect the brain. Quitting smoking and avoiding excessive alcohol can support overall brain and cardiovascular health.
5. Stay Socially and Mentally Engaged
Maintaining social connections and regularly engaging your mind can contribute to overall cognitive and emotional well-being.
Read, learn a new skill, play music, participate in social activities, volunteer, or find hobbies that genuinely challenge and interest you.
6. Protect Your Heart to Protect Your Brain
Brain health and cardiovascular health are closely connected. Maintaining a healthy weight, staying active, eating a balanced diet, managing cholesterol and blood pressure, and addressing conditions such as diabetes can all contribute to better long-term health.
The 2024 Lancet Commission identified 14 potentially modifiable dementia risk factors, including physical inactivity, high blood pressure, diabetes, hearing loss, smoking, excessive alcohol use, social isolation, high LDL cholesterol, and untreated vision loss.
Final Thoughts
Dementia doesn’t always begin with dramatic memory loss. Sometimes the earliest clues are changes in familiar routines, language, judgment, navigation, personality, or social behavior.
The most important thing is not to panic—but not to ignore persistent changes either.
Pay attention to patterns, talk openly with loved ones, and seek professional advice when cognitive changes begin interfering with everyday life. At the same time, focus on the habits you can control: stay active, manage cardiovascular risk factors, protect your hearing and vision, avoid smoking, limit excessive alcohol, and stay socially engaged.