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Diabetes and Dementia: What Families and Caregivers Need to Know
It often begins with something small.
A prescription isn’t refilled on time.
The glucose meter has several days of missing readings.
A meal is skipped after medication has already been taken.
An insulin dose is given twice—or not at all.
A person who has managed Diabetes confidently for years suddenly seems unsure about a routine that was once second nature.
Families don’t always recognize these moments as possible changes in thinking or memory.
They may assume their loved one is being careless, stubborn or less interested in taking care of themselves. The person living with Diabetes may become defensive because the questions feel intrusive.
Everyone becomes frustrated.
Yet something deeper may be changing.
Diabetes self-care requires a remarkable amount of mental work. It involves remembering, planning, calculating, organizing, interpreting information, solving problems and making decisions—often several times a day.
When memory or thinking begins to change, familiar Diabetes routines may be one of the first places those changes become visible.
That doesn’t automatically mean someone has dementia.
It does mean the change deserves attention, curiosity and compassion.
Across decades of living with Diabetes and seeing its impact through four generations of my own family, supporting a person’s health is never only about managing a condition. It’s also about protecting their confidence, dignity, relationships and ability to remain involved in their own life.
That becomes especially important when Diabetes and dementia meet.
Understanding the Connection Between Diabetes and Dementia
Diabetes and dementia are different conditions.
Alzheimer’s disease isn’t simply “Diabetes of the brain,” and having Diabetes doesn’t mean someone will inevitably develop dementia.
Research does show that people living with Diabetes have an increased risk of cognitive decline and certain forms of dementia.
Several factors may contribute to that connection.
Over time, high blood sugar can damage blood vessels throughout the body, including the vessels that supply the brain. High blood pressure, elevated cholesterol, inflammation, stroke risk and other cardiovascular concerns can also influence cognitive health.
Low blood sugar matters as well.
The Centers for Disease Control and Prevention explains that both high and low blood sugar can affect the brain. Low blood sugar can cause immediate confusion, difficulty walking or speaking, seizures or loss of consciousness. Repeated or severe episodes are particularly concerning in an older adult.
The relationship can move in both directions.
Diabetes may contribute to conditions that affect the brain.
Changes in memory and judgment can then make Diabetes more difficult and less safe to manage.
This is why the goal isn’t to frighten families with statistics.
It’s to help them notice when support may be needed before a preventable crisis occurs.
Diabetes Management Is Cognitive Work
Think about everything a person may need to do to manage Diabetes:
Remember which medications to take and when
Identify the correct medication or insulin
Measure or select the correct dose
Use a glucose meter or continuous glucose monitor
Interpret a reading
Decide what to do when glucose is high or low
Coordinate medication with meals
Plan and prepare food
Recognize symptoms that require attention
Order and organize supplies
Attend appointments
Follow changing medical instructions
Adjust routines for travel, illness, exercise or an unusual day
Each task may appear simple when it is familiar.
Together, they require memory, attention, sequencing, judgment and problem-solving.
A person with early cognitive changes may still appear socially capable. They may hold an enjoyable conversation, remember stories from years ago and manage many ordinary activities.
At the same time, the multistep decisions involved in Diabetes care may be becoming harder.
It may be a sign that the current routine now requires more mental capacity than the person can consistently provide.
Early Signs Families May Notice Through Diabetes Care
Memory changes don’t always begin with forgetting a family member’s name or getting lost.
Sometimes the first clue is a change in a familiar health routine.
You may notice:
Medication doses being missed, repeated or taken at unusual times
Insulin amounts that don’t match the established plan
Increasing difficulty using a glucose meter, CGM or insulin device
Frequent missing readings or unexplained gaps in monitoring
Unopened medication packages or an unusually early need for refills
Expired supplies remaining in use
Meals being forgotten or eaten repeatedly
Medication being taken without the meal it was intended to accompany
More frequent low blood sugar
Glucose readings becoming much less predictable without an obvious explanation
Difficulty explaining what happened before a high or low reading
Missed medical appointments
Bills, insurance forms or supply orders becoming confusing
Increased anxiety, frustration or defensiveness around Diabetes tasks
A previously organized person becoming overwhelmed by small changes in routine
One sign on its own doesn’t establish dementia.
A medication error can happen when someone is distracted. A missed meal may follow an unusually busy day. Technology can confuse any of us after an update.
What matters is a new or repeated pattern.
Ask yourself:
Is this different from how the person usually manages Diabetes?
Is it happening more often?
Is it beginning to affect safety?
Those questions are far more useful than waiting for a dramatic incident.
Not Every Episode of Confusion Is Dementia
This point is extremely important.
Dementia usually involves changes that develop and progress over time. Sudden confusion should never be casually attributed to dementia or aging.
A rapid change in alertness, behavior, speech or ability to function may be related to:
Low blood sugar
Very high blood sugar
Dehydration
Infection
Stroke
Medication effects
Head injury
Lack of oxygen
Another urgent medical condition
Low blood sugar can look like intoxication, irritability, confusion or unusual behavior.
Someone with dementia may also have difficulty recognizing or explaining what they are feeling.
If a person becomes suddenly confused, check their glucose if you can do so safely and know how to use their equipment. Follow their established hypoglycemia or emergency plan.
Call emergency services when the person is unconscious, having a seizure, unable to swallow safely, showing possible signs of a stroke or experiencing another severe or rapidly worsening change.
Don’t assume that every confusing moment is “just the dementia.”
The person can have dementia and still develop a separate, treatable medical problem.
When to Request a Cognitive Evaluation
Occasional forgetfulness is common, particularly during periods of stress, illness or poor sleep.
An evaluation becomes important when changes are persistent, worsening or interfering with everyday responsibilities.
The American Diabetes Association’s 2026 Standards of Care recommend cognitive screening for adults aged 65 and older with Diabetes at the initial visit, annually and whenever concerns arise.
Families shouldn’t feel they must diagnose the problem themselves.
Memory and concentration can be affected by many factors, including:
Medication side effects
Depression or anxiety
Poor sleep or sleep apnea
Thyroid conditions
Vitamin B12 deficiency
Hearing or vision loss
Infection
Alcohol use
Pain
Glucose fluctuations
Other neurological or medical concerns
The National Institute on Aging emphasizes that cognitive symptoms can have multiple possible causes.
An evaluation is an opportunity to understand what has changed—not a declaration that the person has dementia.
Early assessment may identify a treatable contributor. If dementia is present, earlier recognition creates more time to discuss care preferences, organize support and involve the person in decisions about their future.
How to Begin the Conversation Without Taking Away Control
This can be one of the most delicate moments for a family.
The person living with Diabetes may have managed their health independently for decades. Questions about medication or memory can feel like criticism—or like the beginning of losing control over their life.
Beginning with an accusation will usually close the conversation.
“You forgot your insulin again.”
“You can’t manage this anymore.”
“You’re becoming unsafe.”
Even when the concern is legitimate, those words can create fear, shame and resistance.
Begin with what you’ve observed.
“I noticed there were a few medication doses left in the organizer this week. Has the routine been feeling more complicated lately?”
“I saw that your glucose was low twice this week. I’d like us to understand what may be contributing.”
“This technology can be frustrating. Would it help if we looked at it together?”
The difference is subtle but important.
You aren’t putting the person on trial.
You’re opening a conversation.
The Alzheimer’s Association recommends avoiding criticism and arguments, offering clear step-by-step guidance and using visual or written cues when they’re helpful.
Protecting safety doesn’t require removing respect.
Think in Layers of Support
Families sometimes wait too long because they believe there are only two choices:
The person manages everything independently.
Or someone else takes over completely.
There are many layers between those two extremes.
The right amount of help is the least intrusive level that still supports safety.
Layer 1: Make the Existing Routine Easier to See
Begin by reducing unnecessary mental clutter.
That may include:
Keeping medications in one consistent location
Using a clearly labeled medication organizer
Posting a simple daily schedule
Writing instructions in the order they’re completed
Setting reminders for meals, medication or monitoring
Keeping commonly used supplies together
Removing expired or discontinued products
Using the same cup, plate or familiar foods when routine is comforting
These supports aren’t about testing someone’s memory.
They allow the person to use their energy for living rather than trying to remember every detail.
Layer 2: Add a Second Set of Eyes
A spouse, adult child or trusted supporter might begin by:
Reviewing the weekly medication organizer
Checking whether prescriptions and supplies are available
Attending important appointments
Looking over glucose patterns together
Confirming that the written plan still matches current medical instructions
Helping prepare a grocery or meal list
Making sure emergency contacts are easy to find
This is partnership, not surveillance.
Whenever possible, include the person in deciding what help would feel useful.
Layer 3: Share Selected Tasks
As needs change, certain responsibilities may need to move to someone else.
One family member might handle prescription refills. Another might arrange appointments. A spouse might supervise insulin while the person still completes the parts they can manage confidently.
Support doesn’t have to arrive all at once.
It can grow as the person’s needs change.
Layer 4: Arrange Direct Assistance
Eventually, someone may need hands-on help with medication, insulin, meals, monitoring or personal care.
At this stage, the healthcare team should understand exactly what the person can still do independently, where errors are occurring and what support is available at home.
The goal remains the same:
Preserve every safe ability while providing reliable help where it is needed.
Ask Whether the Diabetes Plan Has Become Too Complicated
A treatment plan that was manageable five years ago may no longer suit the person today.
The plan may include multiple medications, different dosing times, complicated insulin calculations, several devices and highly specific food instructions.
When cognition, dexterity, eyesight, hearing, appetite or daily support changes, the treatment plan may need to change, too.
The ADA recognizes that cognitive dysfunction can make complex Diabetes self-care tasks difficult. Its 2026 guidance supports simplifying treatment when appropriate to reduce hypoglycemia and treatment burden.
That decision belongs with the person’s qualified healthcare team.
Families shouldn’t independently stop medication, change insulin or relax glucose targets.
They should ask better questions:
Is this treatment plan still appropriate for the person’s current abilities?
Can the medication schedule be simplified?
Are any medications increasing the risk of low blood sugar?
Are the current glucose and A1C goals still appropriate?
Would a different device be easier to use?
Which tasks require supervision?
What should the family do if a dose is missed or repeated?
Does everyone understand the emergency plan?
Would a pharmacist, diabetes care and education specialist, dietitian, home-care nurse or occupational therapist be helpful?
Good Diabetes care isn’t measured by how complicated the plan is.
It is measured by how safely and realistically it supports the person’s health and quality of life.
Make Preventing Low Blood Sugar a Priority
Hypoglycemia can be particularly dangerous for an older adult with cognitive impairment.
The person may not recognize early symptoms.
They may be unable to explain what feels wrong.
They may forget whether they have eaten, taken medication or already treated the low.
Confusion caused by low blood sugar may then be mistaken for the dementia itself.
Families and caregivers should know:
The person’s individualized glucose targets
Which medications can contribute to low blood sugar
The person’s usual signs of a low
How to check their glucose
Where treatment supplies are kept
How to follow the established treatment plan
When emergency help is required
Whether glucagon has been prescribed and who has been trained to use it
Keep the plan written in plain language and place it where it can be found quickly.
Don’t rely on one exhausted person to remember every detail during an emergency.
Use Technology to Reduce Burden, Not Add More
Technology can offer valuable support.
A continuous glucose monitor may help identify patterns and, with the person’s consent, allow selected alerts or readings to be shared with a trusted care partner.
Medication dispensers can provide reminders or release doses at scheduled times.
Shared calendars can help organize appointments and refills.
But technology isn’t automatically helpful.
A device that is too complicated can create additional frustration, alarms and errors. Multiple apps with different passwords may become another burden for the person and family.
Ask:
Does this technology make the routine safer and easier—or simply more complicated?
Choose the simplest tool that solves the actual problem.
Food and Hydration Need Gentle Attention
Changes in memory can affect eating in ways families don’t immediately notice.
A person may:
Forget to eat
Believe they have already eaten
Eat the same meal repeatedly
Lose the ability to organize ingredients
Become overwhelmed by too many choices
Lose interest in food
Have difficulty chewing or swallowing
Drink too little fluid
Prefer sweeter or more familiar foods
Struggle to coordinate meals with medication
The answer isn’t to turn every meal into a confrontation.
Look for ways to make nourishment easier and more inviting.
Offer one or two choices instead of an entire list.
Keep familiar foods available.
Use simple meals that provide protein, fiber, healthy fats and enjoyable flavor without requiring many steps.
Sit and eat together when possible. The social cue of another person having a meal can sometimes be more effective than another reminder.
Watch for unplanned weight loss, dehydration, swallowing difficulties or a significant change in appetite, and bring those concerns to the healthcare team.
Food remains more than fuel.
It's comfort, culture, familiarity and connection.
Those qualities still matter.
Create One Diabetes Care Plan the Family Can Actually Use
Important information is often scattered across medication bottles, appointment summaries, phones and the memories of different family members.
The CDC recommends creating a care plan that keeps essential information in one place.
For someone living with Diabetes and dementia, include:
Current health conditions
All medications, supplements and dosages
Medication and insulin schedules
Known allergies
Glucose-monitoring instructions
Individual glucose targets
The plan for high and low blood sugar
Location of supplies
Healthcare professionals and contact information
Pharmacy information
Emergency contacts
Insurance information
Meal or swallowing concerns
Mobility, hearing or vision needs
The person’s preferred routines
Who is authorized to receive medical information
The date the plan was last reviewed
Update it whenever medications, health, abilities or living arrangements change.
A good care plan reduces the number of decisions someone must make under pressure.
Don’t Let Diabetes Become the Entire Relationship
When one person becomes responsible for another person’s health, conversations can easily become dominated by instructions.
Did you check your glucose?
Did you take your medication?
What did you eat?
Why is that number high?
The relationship begins to feel like one long medical checklist.
Your loved one is still the person they were before the diagnosis.
They still have preferences, humor, memories, values and a need for ordinary human connection.
Listen to music they enjoy.
Look through family photographs.
Take a walk together if it is safe.
Prepare a familiar meal.
Talk about something other than health.
Allow them to contribute in ways that remain possible.
A person should never have to earn warmth by producing a perfect glucose reading.
Diabetes care matters.
So does the life being cared for.
The Caregiver’s Health Is Part of the Care Plan
Caregiving can be meaningful, loving and deeply personal.
It can also be exhausting.
Many caregivers are balancing employment, children, finances, appointments and their own health while trying to ensure that someone else remains safe.
The CDC reports that caregivers of people with dementia face greater risks of anxiety, depression and poorer quality of life than many other caregivers.
You can love someone deeply and still feel tired.
You can be grateful for the time together and still need a break.
Those truths can exist at the same time.
Try to build a team before exhaustion becomes a crisis.
Be specific when asking for help:
“Can you stay with Mom on Tuesday afternoon?”
“Can you handle prescription refills this month?”
“Can you take Dad to his next appointment?”
“Can you prepare two dinners for the freezer?”
“Can you learn the low-blood-sugar plan too?”
A vague offer of “Let me know if you need anything” often goes unused.
A clearly assigned task creates genuine support.
Respite, counseling, caregiver groups, home-care services and family meetings aren’t signs that you are failing.
They help make care sustainable.
Frequently Asked Questions About Diabetes and Dementia
Does Diabetes cause dementia?
Diabetes doesn’t directly cause every case of dementia, and many people living with Diabetes never develop it. Diabetes is associated with a higher risk of cognitive decline and certain forms of dementia, particularly when vascular and other health risks are also present.
Can dementia make Diabetes harder to manage?
Yes. Diabetes management requires memory, planning, judgment and problem-solving. Cognitive changes can make medication, insulin, meals, glucose monitoring and responses to high or low blood sugar more difficult.
What Diabetes-management changes might suggest cognitive decline?
Repeated medication errors, missed meals, unexplained glucose changes, difficulty using familiar equipment, missed appointments and increasing confusion about established routines can all deserve further investigation.
Can low blood sugar look like dementia?
Low blood sugar can cause confusion, irritability, difficulty walking or speaking and unusual behavior. Sudden confusion should be treated as a possible medical problem rather than automatically attributed to dementia.
Should glucose targets change when someone has dementia?
Sometimes a healthcare professional may recommend different or simplified goals based on the person’s cognitive health, functional abilities, overall health and risk of hypoglycemia. Families shouldn’t change medication or targets without qualified medical guidance.
Can a person with early dementia continue managing their own Diabetes?
Some people can continue managing many or most tasks during the early stages, particularly when routines are simplified and appropriate supports are added. Ability should be considered task by task rather than assuming the person can do everything or nothing.
How can caregivers help without taking over?
Begin with the least intrusive support that improves safety. Written schedules, organized supplies, shared appointment planning, medication review and a second set of eyes may be enough initially. Increase assistance as needs change.
What should be included in a Diabetes care plan?
Include medications, doses, glucose targets, monitoring instructions, high- and low-blood-sugar plans, emergency contacts, provider information, supply locations, meal concerns and the person’s preferred daily routines.
A Final Thought for Families
When someone who has always managed Diabetes independently begins to struggle, it can be frightening for everyone.
The person may fear losing control.
The family may fear waiting too long.
Both may be trying to protect the same thing: a life with as much safety, dignity and independence as possible.
The answer isn’t to ignore the changes.
It also isn’t to remove every responsibility at the first mistake.
Begin by noticing.
Ask with kindness.
Seek an evaluation.
Simplify what can be simplified.
Add support in thoughtful layers.
And remember that the person living with Diabetes and dementia is still a person—not a collection of readings, medications and risks.
The most caring plan protects more than blood sugar.
It protects the human being at the center of it.
Would a Whole-Person Conversation Help Your Family?
When Diabetes care begins to feel more complicated, families often aren’t sure which concerns matter most or where support should begin.
A Complimentary Diabetes Wellness Connection Call provides an opportunity to step back and look at the wider picture: daily routines, meals, movement, stress, blood sugar patterns, existing support and the areas that may deserve greater attention.
It doesn’t replace medical evaluation or dementia care.
It can help you identify thoughtful questions, recognize opportunities within daily life and understand what your next best step may be.
ABOUT THE AUTHOR
Dr. Cheryl
Dr. Ac., C.H., RDH
Dr. Holistic Studies, Dr. Acupuncture
Diabetes Wellness Strategist & Coach
Creator & CEO of Holistic Diabetes Solutions
8 X International Best-Selling Author
As a woman living with diabetes for over 30 years, Dr. Cheryl understands the journey firsthand. When she was diagnosed, she received the same outdated advice her grandmother was given for over four decades, who relied primarily on medication, suffered from deteriorating health and eventually lost her life to diabetes. Fueled by this experience, Dr. Cheryl was compelled to seek a better way. Through countless research studies and trials, she developed the winning holistic approach: the Diabetes Success System which merges traditional wisdom with today’s best holistic self-care practices. It has revolutionized diabetes management by providing a trusted way to maintain consistent and predictable healthy blood sugar levels. Join the thousands of people worldwide who have been empowered by Dr. Cheryl's approach and start living your healthiest life.
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PROFESSIONAL DISCLAIMER
The material and content contained in this platform is for overall general diabetes health and education information only. It is not intended to constitute medical advice or to be a substitution for professional medical recommendations, diagnosis or treatment. All specific medical questions or changes you make to your medication and/or lifestyle should be discussed and addressed with your primary healthcare provider. Having the right mindset, doing the right movements at the right times of day, and eating foods that help keep blood sugar, insulin, and inflammation manageable can dramatically reduce your risk of the all-too-common complications of Diabetes, increase your energy levels and have you feeling your best every day.
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