Wellness · Mental wellbeing
Loneliness & health, the health risk we underestimate.
Chronic loneliness harms body and mind. It is common, treatable, and nothing to be ashamed of.
Why trust this guide
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Clinically reviewed
Written by our editorial team and reviewed by a registered UK clinician before publication.
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Sourced from the evidence
Grounded in the Marmot Review and the Holt-Lunstad meta-analyses on social connection and mortality.
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Practical, not preachy
Small, warm, doable steps — not a lecture on what you should feel or do.
Key facts
Loneliness and health, at a glance.
What loneliness is, how common it is, why it matters for your health, and when to reach out for support.
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How common
1 in 4 UK adults reports feeling lonely often or always at some point in the year.
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Why it matters
Chronic loneliness raises the risk of heart disease, dementia, depression and early death — an impact comparable to smoking 15 cigarettes a day.
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Not the same as being alone
You can feel lonely in a full house and content on your own. Quality of connection matters more than quantity.
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Situational vs chronic
A move, a bereavement or a break-up can trigger short-term loneliness. When it settles in for months, it becomes a health issue in its own right.
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Highest rates
Under-25s and over-75s report the highest levels of loneliness in UK surveys.
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When to escalate
Persistent low mood, withdrawal, or any thoughts of self-harm — see the crisis lines in the red-flags section.
Why this guide matters
A quiet risk, worth taking seriously.
Loneliness is easy to dismiss and hard to admit. The three points below shape everything else on this page.
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A health risk comparable to smoking
Meta-analyses put the mortality impact of chronic loneliness on a par with smoking around 15 cigarettes a day.
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Common at every age
Under-25s and over-75s report the highest rates in the UK — but no age group is immune.
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Treatable — with small steps
Consistent contact, community groups and social prescribing all help. You do not have to fix it alone.
The evidence
A gentle way to work through it.
A pragmatic order: understand it first, rule out overlaps, then take small, doable next steps.
Phase 1 · Understand
Name what you are feeling and its shape
Phase 2 · Rule out
Depression and hearing loss both isolate
Phase 3 · Next steps
Small contact goals and social prescribing
- 01
Understand
Distinguish loneliness from solitude
Solitude is a chosen state that can restore you. Loneliness is a felt gap between the connection you have and the connection you want.
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Understand
Assess how it feels
Validated tools like the De Jong Gierveld or UCLA loneliness scales can put shape around a feeling that is otherwise hard to describe.
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Understand
Name the type
Emotional loneliness is missing a close confidant. Social loneliness is missing a wider network. The two need different responses.
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Rule out
Rule out depression
Depression and loneliness overlap and feed each other. If low mood, sleep or appetite have changed, see your GP — treatment helps both.
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Rule out
Rule out hearing loss
Untreated hearing loss quietly isolates people. A hearing test is a small step with a large social payoff.
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Next steps
Set small, consistent goals
One short call, one walk with a neighbour, one class a week. Small and steady beats big and rare.
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Next steps
Ask about social prescribing
Your GP can refer you to a link worker who connects you with local groups, activities and volunteering — an evidence-based NHS pathway.
Typical timeline: weeks to months — small, kept-up changes accumulate.
Signs it affects you
The shapes loneliness takes.
Loneliness looks different at different ages and moments. A few of these will fit; that is normal — and worth taking seriously.
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Chronic loneliness
A persistent sense of disconnection lasting months, not weeks.
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Situational loneliness
After a move, a break-up, retirement or a bereavement — usually eases with time and support.
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Loneliness in older age
Bereavement, mobility loss and hearing changes compound isolation.
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Loneliness in young adults
Under-25s report some of the highest rates — social media does not replace close contact.
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Low mood overlap
Loneliness and depression share symptoms and often occur together.
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Sleep disturbance
Poor sleep is both a symptom and a driver of loneliness.
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Physical health impact
Higher risk of heart disease, stroke, dementia and earlier mortality.
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Red flag: crisis lines
If you are struggling to cope or having thoughts of self-harm — Samaritans 116 123, SHOUT text 85258, or 999 in an emergency.
How to do it
Small, warm steps that add up.
Eight practical options — pick one or two that fit your life this month, and add another next month.
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Weekly meaningful contact
One call, one shared meal, one walk a week with someone who matters. Diarise it like an appointment.
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Volunteer or join a class
Purposeful activity with other people is one of the most reliable ways to lift loneliness.
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Community groups
Age UK, the Marmalade Trust and local community groups run friendship schemes and open-door events.
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Social prescribing
Ask your GP for a referral to a link worker — a free NHS pathway that connects you with local activities.
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Treat hearing loss
Hearing aids reduce social withdrawal. If conversation feels like hard work, get a hearing test.
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Address depression
Talking therapy or medication for depression often eases loneliness at the same time.
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CBT for loneliness
Cognitive behavioural therapy can help unpick the thoughts that keep people at arm’s length.
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Regular exercise
Movement lifts mood and, in a class or club, doubles as social contact.
What this guide is based on
The sources behind every claim on this page.
UK national guidance, the Marmot Review, and the Holt-Lunstad meta-analyses on social connection and mortality.
Key references
Reviews, strategies and charities we relied on.
A quiet reminder
This guide is for information, not medical advice.
If loneliness is affecting your health, mood or daily life, please talk to your GP. If you are in crisis, call Samaritans on 116 123 or 999.
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Marmot M. Fair Society, Healthy Lives (The Marmot Review).
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Holt-Lunstad J et al. Loneliness and social isolation as risk factors for mortality: meta-analytic review, 2015.
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UK Government. A Connected Society: A Strategy for Tackling Loneliness.
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Marmalade Trust. Understanding loneliness.
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NHS England. Social prescribing.
Red flags
When to reach out for support.
These are the signs to bring to a GP — or, in a crisis, to the numbers below. You do not need to wait until things feel unmanageable.
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Persistent low mood beyond 2 weeks
Low mood, loss of interest or hopelessness lasting more than a fortnight — see your GP.
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Withdrawing from all contact
Cancelling plans, avoiding calls and pulling back from people who care — a sign to reach out for help.
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Sleep and appetite change
Sleeping much more or much less, eating much more or much less — often the first physical clue.
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Unintended weight loss
Losing weight without meaning to, especially in older adults — deserves a GP review.
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Alcohol misuse
Drinking more, or earlier in the day, to soften how it feels — worth speaking to a GP about.
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Self-neglect
Skipping meals, missing medication, letting personal care slip — a signal that support is needed.
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New onset with memory change in older adults
New withdrawal alongside memory or confusion changes — arrange a GP assessment for cognition.
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Bereavement without recovery
Grief that feels stuck after 6-12 months, or that stops daily life, can be helped by bereavement support or therapy.
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Any thoughts of self-harm — reach out now
You do not have to be in crisis to call. Samaritans 116 123 (24/7), SHOUT text 85258, or 999 in an emergency.
Making it stick
A little, often — that is the whole trick.
Four principles to keep small changes going, without making them feel like homework.
A quiet reminder
Reaching out is a strength, not a weakness.
Most people are quietly glad when someone else makes the first move. It is almost always more welcome than you expect.
- 01 Rhythm
Small and consistent beats big and occasional
A short weekly call does more than a rare grand plan. Little rituals build the sense of being known.
- 02 Quality
Quality matters more than quantity
One or two people you can be honest with will lift loneliness more than a wide but shallow circle.
- 03 First move
Reach out first — most people are glad you did
We overestimate how much a message will bother someone and underestimate how welcome it is.
- 04 Support
You do not have to do this alone
Marmalade Trust, Age UK and your GP can all help. Asking for help is a step forward, not a step back.
Frequently asked
Everything we get asked about loneliness.
Quick answers on ages, overlap with depression, digital contact, social prescribing and when to see a GP.
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What is loneliness?
Loneliness is the distressing feeling that the connection you have does not match the connection you want. It is a feeling, not a fact about how many people you know.
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Is loneliness the same as being alone?
No. You can feel lonely in a crowd and content on your own. Some people thrive with a lot of solitude; others need more contact. Neither is wrong.
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Why is loneliness a health risk?
Chronic loneliness is linked to higher rates of heart disease, dementia, depression and earlier death. The Holt-Lunstad meta-analyses estimated its mortality impact as comparable to smoking around 15 cigarettes a day.
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Why do young adults report so much loneliness?
UK surveys consistently show under-25s among the loneliest age groups. Life transitions, digital-first friendships and comparison culture all play a part — and it is often invisible from the outside.
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What about older adults?
Bereavement, retirement, reduced mobility and hearing loss can compound over time. Small, regular contact and community groups make a real difference — as does treating hearing loss.
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Does volunteering help?
Yes — regular volunteering is one of the best-evidenced ways to reduce loneliness. Purposeful activity alongside other people lifts mood and builds ties.
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What is social prescribing?
A free NHS pathway. Your GP refers you to a link worker, who takes time to understand what matters to you and connects you with local groups, classes or activities.
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Are loneliness and depression the same thing?
No, but they overlap and feed each other. Depression can make you withdraw, and withdrawal can deepen depression. Treating one often helps the other.
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Does digital contact — texting, video calls — help?
It can, but the evidence is mixed. Depth and warmth matter more than frequency of notifications. A real call or a shared meal usually beats an hour of scrolling.
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When should I see a GP?
If low mood has lasted more than two weeks, if you are withdrawing from life, or if you are having any thoughts of self-harm — please book a GP appointment or call Samaritans on 116 123.
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