Living Alone With Dementia: Four in Ten in England, and the Support Gaps

In the high-income countries with data, studies find that from about a fifth to about a half of people with dementia who live in their own homes live alone. In England in 2023, 40% of people with a recorded dementia diagnosis who were not in a care home lived alone, up from about 30% in 2009^[1]. Yet much dementia care still relies on a family member living in the same house.

Living alone with dementia is not, in itself, a crisis. Many people value it and manage well, often with help from family elsewhere, neighbours and home care. But much of what dementia services rely on is done by whoever shares the home: noticing changes, getting to appointments, keeping track of medicines, saying when things are getting harder. When nobody shares the home, those jobs fall to services, and the evidence below shows they often go undone. The problem is a gap in support, not the choice to live independently.

Living alone with dementia is common, and in England it is becoming more common

The best national count we found comes from England. Researchers using GP records in the Clinical Practice Research Datalink identified 205,507 people with dementia in 2023. Leaving out those in care facilities, 39.9% lived alone. Women (45.0%) were more likely to live alone than men (33.3%), as were people aged 80 and over (43.4%). The proportion has risen from about 30% to 40% since 2009^[1].

The international picture depends heavily on how a study counts. A comparison of harmonised ageing surveys from 2012 to 2018, looking at people with dementia who also had difficulty with daily activities, found that they lived alone in 42.2% of survey waves in England, 36.1% across 19 countries in the SHARE survey of Europe and Israel, 28.6% in the United States and 10.2% in China^[3]. A 2025 systematic review summarised the wider literature as “approximately one third” of people with dementia living on their own^[4].

National registers and cohorts each count a different group, so these figures are not directly comparable:

Research cohorts that involve a family carer are likely to under-count those living alone, which may partly explain the lower IDEAL figure. In the United States, researchers using Health and Retirement Study data for 2000–2014 estimated that 4.3 million adults aged 55 and over lived alone with cognitive impairment, a broader group than dementia alone^[2], and a national survey linked to Medicare claims put the share of older adults with cognitive impairment living alone at 31%^[10]. In Japan, where one household in three has only one person in it, researchers describe people living alone with dementia as facing “elevated risks for adverse health outcomes, delayed diagnoses, and difficulties accessing critical services”^[11]. We found no country that publishes a routine official statistic on how many people with dementia live alone.

Living alone is most common among women, the oldest and people in poorer areas

In England, the 2023 GP-records study found clear social patterns. People with dementia were more likely to live alone the more deprived their area: 46.1% in the most deprived fifth of neighbourhoods, compared with 35.3% in the least deprived. Living alone was also more common among people registered with urban practices (40.7%) than rural ones (34.2%)^[1].

There were differences by ethnicity too. In England, 47.6% of Black people with dementia lived alone, compared with 40.8% of white people and 24.4% of people of Bangladeshi, Indian or Pakistani heritage^[1]. In Sweden’s registry, those living alone with Alzheimer’s disease were “primarily older women”^[5], and in Germany they were more often female, older and widowed^[6]. Some people live alone by choice and others after a bereavement^[12]. Either way, in England living alone with dementia and area deprivation tend to go together. For more on income and dementia, see our study of deprivation and dementia.

Without someone at home to notice, dementia is recognised later and investigated less

Diagnosis usually begins with someone noticing a change, and for people who live alone there is no one in the house to do that. In a US community study in Baltimore, 97 of 349 people with dementia (27.8%) lived alone. The authors found a “lack of awareness of cognitive impairment by individuals with dementia living alone as well as their knowledgeable informants and physicians”, which, together with their other difficulties, “heightens risk for adverse outcomes”^[13].

In Brazil’s national ageing study (ELSI-Brazil, 2015–2016), 83.1% of older people who met the study’s criteria for dementia had never been diagnosed. Living alone was linked to 3.65 times the odds of being undiagnosed, though the estimate is imprecise (95% confidence interval 1.05 to 12.6) because only 392 people met the dementia criteria^[14]. At a Japanese memory clinic, the 57 people who lived alone had lower scores on cognitive tests than the 221 who lived with others, and their use of services under Japan’s public long-term care insurance system was low^[15].

Once people are in the system, care can still differ. Sweden’s national dementia registry compared 11,878 people with Alzheimer’s disease who lived alone with those who lived with someone, among those diagnosed between 2007 and 2015. After adjusting for other differences, people living alone had lower odds of a brain MRI (odds ratio 0.91) or lumbar puncture (0.86) during diagnosis, and lower odds of taking cholinesterase inhibitors (0.81) or memantine (0.77). They had higher odds of being prescribed antipsychotics (1.41). The authors concluded that people living alone “do not receive the same extent of care as those who are cohabiting”^[5].

Not every system shows this gap. In Northern Ireland, among 25,418 people prescribed a dementia medication between 2010 and 2016, the researchers concluded that living alone “did not affect treatment for dementia”^[7]. That study only included people who had already been prescribed dementia medication, so it cannot show who never reached that point. Our study of dementia diagnosis rates covers the wider diagnosis gap.

People living alone get more paid help, but more of their needs go unmet

Services do respond to people living alone, but not enough to replace a co-resident’s help. In Germany, people with dementia living alone used home care, help with medication, home-delivered meals and housekeeping help significantly more often than those living with others; about 9% of all those studied had no informal carer at all^[6]. A systematic review of 32 studies from 13 countries found that people living alone with cognitive impairment generally used more social services such as home care, but their use of health services was “lower or similar”. Home services reached more of them in Europe than in the United States, where “large portions” were reported to receive no formal services^[16].

The gap shows up as unmet need. In a London study, people with dementia living alone had an average of 3.9 unmet needs, against 2.0 for those living with others^[17]. In US national survey data for 2023, people with dementia living alone had the most varied helpers, with non-family helpers involved for 29% and paid helpers for 19%, “yet received the least help across most domains”, and had more unmet needs than people living with others who were not a spouse^[8]. In the English Longitudinal Study of Ageing, unmet needs among people with dementia rose over four years, and “the major driver of increased unmet needs was not having a partner”^[18].

The largest cross-country analysis, covering the US, England, 18 European countries, Israel and China from 2012 to 2018, found that at least one in five people with dementia and functional limitations received no personal help with daily activities, whatever the region’s level of development. People living alone had bigger gaps in informal care, by between 4 and 29 percentage points depending on the survey and the activity. They were somewhat more likely to get formal care, but the overall absence of care was still higher. The authors add that “care availability showed no improvement over time”^[3]. In China, adults living alone with cognitive impairment had 1.59 times the odds of disability in basic daily activities compared with matched peers living with others and with normal cognition, yet received about 128 fewer hours of informal care a month^[19].

Medicines are one concrete example. Among US older adults with cognitive impairment living alone in 2015–2017, 14% managed their medicines on their own with difficulty, only 18% had full support with them, and 46% took at least one high-risk medication, a similar rate to people living with others^[10].

Many live well alone, but loneliness is higher and the move into care often comes sooner

In the UK IDEAL cohort of people with mild-to-moderate dementia, those living alone had, on average, better cognitive and functional ability and more contact with people from other households. They showed no differences in symptoms, mood, quality of life or well-being, and the authors concluded that it is possible to “live well” with dementia while living alone, “given appropriate support”. But they were lonelier and less satisfied with life, and 51 people (3% of the whole sample) reported little or no informal support^[9]. Followed for two years, people living alone in IDEAL had poorer physical, social and psychological health and lower well-being; “these differences persisted over time and rates of transition into residential care were higher”^[20].

In several countries, living alone is linked to a higher chance of moving into a care home. In Norway, among 2,938 people diagnosed with dementia while living at home, those living alone, particularly men, had a higher probability of nursing-home admission^[21]. In Canada, seniors with dementia living alone, without a primary caregiver in the home, were around twice as likely to enter long-term care as those living with their caregiver^[22]. The pattern is not universal: in Swedish national registers for 2020–2022, living alone was linked to lower odds of entering a nursing home among people with dementia, and the authors asked whether those living alone are “receiving adequate care”^[23]. A move into care may be the right choice for some people, but when it happens because support at home ran out, that is a service gap. Our study of dementia in care homes covers what happens next.

Some feared risks look smaller in the data: in a US cohort of 2,636 older adults, living alone was not linked to more hospital admissions, with or without dementia^[24]. In Japan, a study of 88 people with dementia living alone who went missing found that using Japan’s public long-term care insurance services was linked to their being found sooner; the authors suggest that planned, regular home visits by professionals might lead to a missing person being noticed early^[25]. Regular contact with services may itself work as a safety measure.

What the evidence asks of us

The evidence does not say people with dementia should stop living alone. It says that services built around a co-resident carer leave gaps in diagnosis, treatment and day-to-day help. Closing them would mean:

• Counting them. We found no country that routinely publishes how many people with dementia live alone. The English study had to infer living situation for many people, because it was recorded in clinical notes for only 68% of people with dementia^[1]. Recording living situation at diagnosis and at reviews would let services plan for this group.
• Not relying on a relative to make contact. NICE guideline NG97 for England already asks that each person with dementia has a “named health or social care professional who is responsible for coordinating their care”, with an initial needs assessment “face to face if possible”. For people who decline follow-up, it asks services to offer to make contact again at a set future date^[26].
• Matching diagnosis and treatment. The Swedish registry findings point to a need to check that people living alone receive the same diagnostic work-up and treatment as everyone else^[5].
• Funding home and community support at the scale of need. The cross-country analysis calls for policies to “ensure critical access to care services” for people with dementia who lack care^[3]. Canada’s health information institute lists options including “group housing options for seniors who would otherwise be living alone and unsupported” and better technology and support in the community^[22].
• Building the evidence. A 2025 review found only 13 evaluated interventions designed for people with dementia who live alone, including just one randomised controlled trial, and only two studies at low risk of bias^[4].
• Treating it as a matter of rights. Japan has launched a study on protecting the rights of older people living alone with dementia, grounded in a “human rights-based approach” that treats living alone with dementia as viable^[11].

Support after diagnosis is covered in more depth in our study of post-diagnostic support, and the rest of our dementia research library sets these findings in context.

Language: this piece uses person-first language ("people living with dementia", "people with dementia"), as most dementia organisations and people with lived experience prefer, and uses clinical terms such as "Alzheimer's disease" or "mild cognitive impairment" only where a study, dataset or diagnosis refers to that specific condition.

Why we're publishing this

People living alone with dementia are often missing from dementia statistics and research, partly because studies tend to recruit through a family carer. Yet they are a large and, in England, growing share of people with dementia. We publish this so that they, the family and friends who support them from other households, and the organisations that work with them can point to the evidence when asking for services designed with them in mind. The case is theirs.

How to read this data

Figures on living alone with dementia are not directly comparable between studies. They differ in who counts as having dementia (a recorded diagnosis, a prescription, or a survey algorithm that also picks up undiagnosed dementia), in who is counted (everyone at home, only people receiving help, or only people with Alzheimer’s disease) and in how living alone is defined. Most exclude people in care homes. The English figure comes from GP records in which living situation was often inferred from household registration or marital status, and the authors note that estimates in the literature “vary widely”^[1]. Associations such as odds ratios show links, not causes: people who live alone differ in age, sex and health from those who do not. Several studies are small, and some findings (for example on care-home moves) point in different directions in different countries. We found little published evidence from low- and middle-income countries other than Brazil and China.

Use this data

Free to cite with attribution to Understanding Aging. Charities, carers' groups, campaigners and journalists are welcome to reuse these figures and charts. For the underlying figures as a spreadsheet, get in touch.

Important: This article summarises published research and statistics for general information. It is not medical, care or financial advice and cannot be used to diagnose, treat or predict anything about an individual. If you have concerns about your own or someone else's memory or health, please speak to a GP or another qualified health professional.

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