Your mother has had type 2 diabetes for years and always managed it herself. Lately her pill box has days still full, she's been dizzy in the afternoons, and once she seemed confused until she ate something. You're not sure whether to step in, or how.
This guide draws on the National Institute on Aging, American Diabetes Association guidance on older adults and Medicare. It's general information. Your parent's diabetes plan should come from their own care team.
What diabetes is and why age matters
Diabetes happens when blood glucose, also called blood sugar, is too high1. Type 2 diabetes is the form most likely to develop in older adults1. Over time, high blood sugar can damage the eyes, kidneys, nerves, heart and blood vessels.
Age changes the picture in a few ways. Kidneys often work less well, which can let some diabetes medicines build up. Many older adults take several medicines that can interact. And memory, vision or hand problems can make it harder to check blood sugar or take insulin correctly2. That's why diabetes care for an 80-year-old often looks different from care for a 50-year-old. People with diabetes should also know the signs of shingles.
Symptoms in older adults
Classic symptoms of high blood sugar include thirst, frequent urination, tiredness, blurred vision, slow-healing sores and frequent infections. In older adults these can be mild or easy to blame on age. A parent may simply seem more tired, get more urinary infections, or become dehydrated.
Many people find out they have diabetes through a routine blood test. Medicare Part B covers diabetes screening blood tests for people at risk, such as those with high blood pressure, high cholesterol, obesity or a history of high blood sugar3. Ask your parent's doctor whether it's time for one.
Why low blood sugar is especially dangerous
Hypoglycemia, or low blood sugar, is often the bigger day-to-day danger for older adults on certain diabetes medicines, especially insulin and some pills that push the body to make more insulin. The American Diabetes Association says older adults are at higher risk of hypoglycemia for many reasons, including declining kidney function, and that hypoglycemia should be avoided2. It also links severe lows with a higher risk of dementia, and memory problems with a higher risk of lows2.
Signs of low blood sugar can include shakiness, sweating, a fast heartbeat, hunger, irritability, confusion, slurred speech and unusual behavior. In older adults the warning signs can be weaker, so a low may first show up as confusion, a fall or acting "not like herself."
Blood sugar goals may change with age
For older adults who are healthy and have good thinking and function, diabetes goals may be similar to those for younger adults. For others, the American Diabetes Association says goals may reasonably be relaxed, while still avoiding high blood sugar that causes symptoms2. Chasing very tight numbers in a frail person can cause more lows without much benefit.
If your parent's health has changed, such as a new dementia diagnosis, falls or weight loss, ask whether their A1C target and medicines still fit. That's a reasonable question at any visit, and especially at the Annual Wellness Visit.
Daily management, and where families can help
The NIA lists the basics of managing diabetes as taking medicines as prescribed, being active, making healthy food choices and tracking blood sugar as the care plan directs1. Families can support each one without taking over.
- Medicines. Use a pill organizer or ask the pharmacy for blister packs. The NIA suggests telling the doctor about side effects, cost problems or trouble keeping track of medicines1. See medication management.
- Meals. Regular meals matter, especially for people on insulin. Skipped meals are a common cause of lows. If your parent isn't eating well, see when an elderly parent isn't eating.
- Activity. Walking and other daily exercise can improve blood sugar in older people1. A short walk after meals is a good start.
- Blood sugar checks. Your parent's plan shows how often to check1. A meter with a large screen or a continuous glucose monitor may help. Medicare covers blood sugar monitors and supplies, including some continuous monitors, when requirements are met5.
- A written plan. Post what to do for a low and who to call.
Sick days and high blood sugar
Illness can push blood sugar up or down. A cold, the flu, an infection or a stomach bug can raise blood sugar even when your parent is eating less, and vomiting or not eating can lead to lows in someone on insulin or certain pills. Ask the care team for a written sick-day plan: how often to check blood sugar, whether to change any doses, what to drink, and when to call.
Very high blood sugar over days, especially with dehydration, can become an emergency in older adults. Signs include extreme thirst, very frequent urination or very little urine, dry mouth, weakness, confusion and drowsiness. Call the doctor promptly, and call 911 if your parent is hard to wake, very confused or can't keep fluids down. Infections such as pneumonia are a common trigger, so a sick day in a parent with diabetes deserves closer attention than usual.
Watching for complications
- Feet. Nerve damage can hide cuts and blisters. Check feet daily, or ask your parent to, and report sores that don't heal.
- Eyes. Diabetes can damage the retina. A yearly dilated eye exam is commonly recommended.
- Kidneys. Blood and urine tests track kidney health. See kidney failure in the elderly.
- Heart and stroke. Blood pressure and cholesterol control matter as much as blood sugar2. See stroke recovery.
- Skin. Slow healing raises the risk of wounds and pressure sores in a parent who sits or lies a lot. See bed sores.
The ADA recommends focusing complication screening on problems that would affect function and independence2.
Diabetes, memory and mood
The ADA recommends yearly screening for mild cognitive impairment or dementia in adults 65 and older with diabetes, and considers older adults with diabetes a high-priority group for depression screening and treatment2. Both matter for safety: a parent with memory problems may double a dose or forget whether they ate.
If memory is slipping, simplify. Ask the doctor whether fewer daily doses or medicines with lower risk of lows would work. Move from self-management to supervised management gradually, with your parent's input. See mild cognitive impairment and depression in older adults.
Learning together: diabetes education
Medicare Part B covers diabetes self-management training for people with diabetes who have a written order from their doctor4. The training teaches how to manage diabetes day to day, including eating, activity, monitoring and medicines4. Ask whether a family caregiver can attend too. Learning the same plan at the same time makes it easier to help without arguments.
Medicare cost sharing applies to these services. Check the Medicare.gov page for current rules4.
Diabetes in assisted living and other care
If your parent moves to assisted living or a nursing home, ask how the community handles diabetes: who checks blood sugar, who gives insulin, how meals are planned and what staff do for a low. The ADA notes that people with diabetes in long-term care need careful assessment of their goals and medicines, and recommends diabetes education for staff2. Rules on who can give insulin in assisted living vary by state. See assisted living levels of care and our assisted living guide.
Talking with a parent who wants to stay in charge
Many older adults have managed diabetes for decades and resent being supervised. Start with what you've noticed and why it worries you. Offer one specific kind of help, like filling the pill box on Sundays or setting up meter reminders, rather than taking over the whole plan. Agree on a signal for when you'll step in more, such as two low readings in a week or a missed dose. Framing help as a way to keep your parent independent longer, rather than as a loss of control, often lands better. If your parent refuses help altogether, see when a parent refuses help.
An example
Frank, 81, had two afternoon falls in a month. His son came to his next appointment and mentioned that Frank often skipped lunch. The doctor checked his records, saw low readings, and changed a medicine with a high risk of lows to one with a lower risk. The A1C goal was relaxed a little. Frank's son set up a lunch delivery three days a week, and Frank's falls stopped. This is an illustration; changes to medicines must come from your parent's doctor.
Next steps
Ask for a current written diabetes plan, including what to do for lows. Bring every medicine to the next visit. Ask about diabetes education for both of you. If daily management is becoming too much at home, the care quiz can help you think through the level of support your parent may need.
