September 8, 2026 by
Watching your parent with dementia sleep more and more is surprisingly unsettling. They fall asleep in the recliner after breakfast. They nap through the afternoon. They head to bed earlier than they used to. Is this excessive sleeping with dementia something to worry about, or is it normal?
It’s natural to wonder if something is wrong. And sometimes it is. But more often, the question isn’t how many hours they’re sleeping. It’s whether their sleep has changed.
Why Sleep Changes With Dementia
As dementia progresses, changes in sleeping patterns are common. While most older adults need about seven to nine hours of sleep each night, someone living with dementia may eventually sleep 13 to 15 hours over the course of a day.
That can be alarming to watch, but it doesn’t necessarily mean something is wrong. Dementia affects areas of the brain that regulate the body’s sleep-wake cycle. As a result, your parent may have trouble distinguishing between day and night, wake up more frequently overnight, or struggle to get restful sleep. When nighttime sleep becomes disrupted, it’s natural to become sleepier during the day.
At the same time, normal, everyday activities require much more effort than they once did. Holding a conversation, getting dressed, eating a meal, or taking a short walk become exhausting. As the disease progresses, that fatigue often leads to longer naps and more hours spent sleeping.
How Much Sleep Is Too Much?
There isn’t a specific number of hours that automatically means your parent is sleeping too much. Someone with dementia may sleep significantly longer than they did in the past, particularly during the later stages of the disease, and that can be a normal part of its progression.
So instead of watching the clock, pay attention to patterns. Has your parent gradually started sleeping more over several months? Or did they suddenly begin sleeping much longer than usual over the past day or two? That difference matters.
When Should You Call the Doctor?
Although increased sleep is often expected, sudden or dramatic changes deserve medical attention. Sometimes excessive sleep has little to do with dementia itself and may be caused by something that can be treated.
Contact your healthcare provider if you notice any of the following:
- Your parent suddenly begins sleeping much more than usual.
- They’re unusually difficult to wake or seem much less alert than normal.
- They’ve recently started a new medication or changed the dosage of an existing one.
- They have a fever, signs of pain, dehydration, or a possible infection.
- They’re sleeping so much that they’re regularly missing meals or are not drinking enough fluids.
- Their increased sleep is accompanied by a noticeable increase in confusion or changes in behavior.
Infections, medication side effects, depression, dehydration, and other medical conditions can all contribute to excessive sleepiness. That’s why it’s always worth discussing sudden changes with your healthcare provider rather than assuming it’s simply another stage of dementia.
How to Help Your Parent Sleep Better
You can’t prevent the sleep changes that often accompany dementia, but there are several simple habits that may encourage healthier sleep.
- Keep a consistent daily routine. Waking up, eating meals, and going to bed at roughly the same time each day helps reinforce the body’s natural rhythms.
- Encourage natural daylight. Time outdoors or sitting near a sunny window can help regulate the body’s internal clock and improve nighttime sleep.
- Promote daytime activity. A short walk, listening to favorite music, folding towels, watering plants, or another familiar activity can reduce daytime sleeping while keeping your parent engaged.
- Create a calming evening routine. Dimming the lights, reducing household noise, and avoiding stimulating activities before bed may help encourage better nighttime sleep.
- Keep notes about changes. If you notice your parent sleeping significantly more than usual, write down when it began and any other symptoms you’ve observed. Those details can help your healthcare provider determine whether additional evaluation is needed.
What to Expect
One of the hardest parts of dementia is that it rarely stays the same for long. Just when you’ve adjusted to one stage of the disease, something changes. Memory declines a little more. Daily routines need to be adjusted. Sleep patterns shift.
Understanding that these changes are often part of dementia doesn’t make them any easier emotionally, but it can make them less frightening. It helps to know what’s typical and to recognize when something falls outside that pattern.
More Peace of Mind Starts Here
It’s impossible to eliminate every concern that comes with dementia. But you can have someone in your corner who understands the disease, recognizes the changes to watch for, and helps make each day run a little more smoothly.
If you’re ready for extra support, At Home Independent Living is here to help in Salina, Camillus, Syracuse, and across Central New York. Call us at (315) 579-HOME (4663) any time to learn more about our in-home dementia care services.