Yes, people with dementia often sleep a lot, especially as the condition progresses, experiencing disrupted nights with frequent waking and long daytime naps, or even sleeping almost all the time in the final stages, due to brain changes affecting their body clock, increased fatigue from daily tasks, and medications. While it's a common symptom, it's a sign of the disease advancing and a change from normal aging, often indicating increased frailty and brain deterioration, say Dementia Australia and Alzheimer's Society.
Signs of late-stage dementia
Sleeping more and more is a common feature of later-stage dementia. As the disease progresses, the damage to a person's brain becomes more extensive and they gradually become weaker and frailer over time.
During middle-stage AD, memory loss progresses into forgetting long-term memories. For example, it is common to forget personal life events like weddings and funerals, family members, and friends. Memories of how to perform a task such as riding a bike or driving can also be affected.
You can live with dementia for an average of 4 to 10 years after diagnosis, but this varies significantly, with some people living 20 years or more, depending on age, overall health, and dementia type, with Alzheimer's averaging 8-10 years and vascular dementia closer to 5 years. Factors like diagnosis stage, age, gender, other health conditions (e.g., heart disease, frailty), and dementia subtype greatly influence life expectancy, with people often succumbing to infections or complications rather than the disease itself.
Recognizing the Signs of Dementia Progression
Increased Confusion and Disorientation – As dementia progresses, individuals may struggle to recognize familiar faces, places, or even the time of day. They may get lost in once-familiar settings or have difficulty following conversations.
The number one cause of dementia is Alzheimer's disease, responsible for 60-80% of cases, characterized by brain plaques (beta-amyloid protein) and tangles (tau protein) that damage nerve cells, leading to progressive memory and cognitive decline, though vascular dementia from blood vessel damage is also a significant factor.
Smoking, low physical activity, and a poor diet are all lifestyle and environmental influences that have been linked to rapid dementia decline. Physical activity promotes cardiovascular health, which in turn improves brain function. Those who lead a sedentary lifestyle may experience faster cognitive decline.
A person with dementia may have problems with sleeping at night, and may sleep more during the day. They may find it difficult to get to sleep or they may wake up in the night. The person you care for may not feel well rested when they wake up.
The "2-finger test" for dementia involves an examiner showing a hand gesture (like interlocking index and middle fingers) and asking the patient to copy it, testing motor skills, visual memory, and coordination, as difficulties can signal early cognitive decline, but it's a screening tool, not a definitive diagnosis, prompting further medical evaluation. Other related tests include finger-tapping and finger-to-nose, looking for hesitation or misjudgment in movement.
Currently, there is up to an estimated 120,000 people living alone with dementia in the UK. This number is predicted to double to around 240,000 by 2039.
Donepezil (also known as Aricept), rivastigmine (Exelon) and galantamine (Reminyl) are used to treat the symptoms of mild to moderate Alzheimer's disease. Donepezil is also used to treat more severe Alzheimer's disease.
Some of the key signs that the end of life is near include the body's organs and systems shutting down, reduction in consciousness, and periods of restlessness and agitation. In the end, many people with late-stage dementia die of medical complications related to the underlying dementia.
Many people affected by dementia are concerned that they may inherit or pass on dementia. The majority of dementia is not inherited by children and grandchildren. In rarer types of dementia there may be a strong genetic link, but these are only a tiny proportion of overall cases of dementia.
It's not always a good idea for someone with dementia to be involved in the formal part of the funeral. It can be extremely upsetting and intense if they forget that their loved one has died and then are reminded of it again at the funeral.
Common changes in behaviour
Life expectancy after a diagnosis of dementia decreases with increasing age. For example, an average person diagnosed with Alzheimer's disease between ages 70-79 can expect to survive seven more years, while a diagnosis after age 90 is associated with an expected survival of only 2.8 additional years.
Misplacing things and losing the ability to retrace steps
A person living with Alzheimer's or other dementia may put things in unusual places. They may lose things and be unable to go back over their steps to find them again. He or she may accuse others of stealing, especially as the disease progresses.
Seroquel is the brand name for quetiapine, an atypical antipsychotic that is used off-label to treat severe behavioral signs of dementia. It can help with bad symptoms, including agitation, aggressiveness, and hallucinations, that other drugs don't help with.
Try to limit or avoid drinking alcohol and smoking.
Over time, excessive drinking can lead to high blood pressure or brain injuries, both of which increase the risk of dementia. Current smoking also increases the risk of developing dementia, including Alzheimer's disease. If you drink alcohol, do so in moderation.
The cause of roughly 70% of all dementia cases is Alzheimer's disease, a progressive brain disorder characterized by the buildup of amyloid plaques and tau tangles, leading to memory loss and impaired thinking that interferes with daily life, making it the most common form of dementia.
But Romano says it's a leap to say that skipping breakfast actually causes dementia. “Alzheimer's disease is a complex brain illness,” he says. “Although the study found these correlations between skipping breakfast and dementia, skipping breakfast might be an indicator of other health habits or life circumstances.”
Our results confirm that vitamin D deficiency is associated with a substantially increased risk of all-cause dementia and Alzheimer disease.
Most people who have dementia continue to be interested in the same things they were interested in before their diagnosis. The way they express their interests may be different, and they may not be able to remember as much. But they likely think about the same things they did before they were diagnosed.