Holding a door, checking in on an elderly neighbour, sending a message to a friend who’s been quiet: small kindnesses are easy to overlook. Research suggests they matter more than we think, and not only to the person on the receiving end.
World Kindness Day falls on 13 November. It was started by the World Kindness Movement, a coalition of kindness organisations formed in Tokyo in 1997, and has been marked on the same date since 1998. There’s no single official theme each year; the idea is simply to notice and practise kindness, in whatever way suits your community.
It comes at a useful moment. In 2025 the WHO Commission on Social Connection reported that about 1 in 6 people worldwide is affected by loneliness, and linked loneliness to more than 871,000 deaths a year. Kindness is one of the simplest ways to build the connections that protect health, for others and for ourselves.
This guide looks at what the research actually says about kindness and health, where the evidence is strong and where it’s still thin, and gives practical ideas you can start with today.
At a glance
- Being kind is linked to small but real boosts in wellbeing. A meta-analysis of 27 studies found acts of kindness give a small-to-medium lift to the wellbeing of the person being kind. It won’t transform your life, but it can nudge it in a good direction.
- Volunteering is linked to better health in later life. In a study of nearly 13,000 adults over 50, those who volunteered about two hours a week had a lower risk of dying over four years, and were more active and less lonely.
- Generosity may help the heart. In one small experiment, people with high blood pressure who spent money on others saw their blood pressure fall.
- Connection is the likely link. Kindness builds relationships, a sense of purpose and a buffer against stress, all of which protect health.
- Small, regular acts count. A phone call, a shared meal, a compliment or an hour of volunteering.
- Be kind to yourself too. Helping others shouldn’t come at the cost of your own health. Carers in particular need support and rest.
What the research says
There’s a lot of enthusiasm online about the health benefits of kindness, and some exaggeration. Here’s what the better-quality evidence shows.
Kindness and happiness: a small, real effect
A meta-analysis led by researchers at the University of Oxford, published in the Journal of Experimental Social Psychology in 2018, combined 27 studies involving more than 4,000 people. It found that performing acts of kindness had a small-to-medium positive effect on the wellbeing of the person being kind. The effect was similar for men and women, across ages, and across different kinds of kind acts.
That’s an honest, useful finding: kindness isn’t a cure for unhappiness, but it’s a free, low-risk habit that tends to help.
Volunteering and healthy ageing
The strongest evidence comes from studies of volunteering in later life. A Harvard-led study of nearly 13,000 adults over 50, published in the American Journal of Preventive Medicine in 2020, found that people who volunteered at least 100 hours a year (about two hours a week) had a substantially reduced risk of death over four years, compared with those who didn’t volunteer. They were also less likely to develop physical limitations, more physically active, and reported more purpose and optimism and less loneliness, depression and hopelessness.
Two important caveats: this kind of study shows a link, not proof that volunteering causes better health, because healthier people may be more able to volunteer. And the same study found no clear effect on chronic conditions such as diabetes, high blood pressure, heart disease or stroke.
Generosity and blood pressure
In two studies published in Health Psychology, researchers looked at adults with high blood pressure. In the first, people who spent more on others had lower blood pressure two years later. In the second, a small experiment with 73 people, those given money to spend on others over six weeks saw their blood pressure fall more than those who spent it on themselves. The studies were small, so this is a promising finding rather than a treatment, and it doesn’t replace blood pressure medicine or lifestyle changes.
The other side: loneliness harms health
The clearest health message may be the reverse. The WHO reports that loneliness and social isolation raise the risk of stroke, heart disease, diabetes, cognitive decline and early death, and that lonely people are twice as likely to become depressed. Kindness, whether you give it or receive it, is one of the most direct ways to build the social connection that protects against these risks.
Why kindness may be good for you
Scientists are still working out exactly how kindness affects health, and it’s likely a mix of factors rather than a single “kindness hormone”. The most plausible explanations are:
- Stronger relationships. Kind acts build trust and closeness, and social connection is one of the best-established protectors of health. The WHO notes that connection reduces inflammation and the risk of serious illness.
- A sense of purpose. Helping others can give your days meaning, and in the volunteering study, volunteers reported more purpose in life and more optimism.
- A break from your own worries. Focusing on someone else for a while can interrupt rumination and put problems in perspective.
- More movement. Many kind acts, from volunteering to running errands for a neighbour, get you up and about. Volunteers in the Harvard study were more physically active.
- A buffer against stress. Feeling connected and useful may help soften the body’s response to stress, although this is harder to measure.
You may have heard of a “helper’s high”, the warm feeling after doing something kind. Many people do feel it, but claims that a single act of kindness floods your body with specific hormones go further than the evidence. The more reliable benefits come from kindness as a regular part of life.
Practical ways to be kinder, starting today
Kindness doesn’t need money, a plan or a special day. The WHO’s own suggestions for building connection are refreshingly simple: reach out to a friend, put your phone away during conversations, greet a neighbour, join a local group or volunteer.
Small, everyday acts
- Call or message someone you haven’t spoken to in a while, especially an older relative or a friend who lives alone.
- Give a specific, genuine compliment or thank someone properly, including the security guard, delivery rider or cleaner you see every day.
- Listen fully, without checking your phone.
- Share food: a dabba for a neighbour, a hot meal for someone recovering from illness.
- Offer practical help, such as carrying shopping, helping an older person with an app or a form, or giving up your seat.
At work
- Notice and name a colleague’s good work.
- Help a new team member find their feet.
- Respect people’s time off, and keep meetings and messages considerate.
- Invite someone who often eats alone to join you for lunch or a walk.
In the family
- Make time for one unhurried meal together without screens.
- Share the load at home, especially with whoever does most of the caring or cooking.
- Model kindness for children. They learn far more from what they see than from what they’re told.
In your community
- Volunteer regularly, even an hour or two a week, with a cause you care about: teaching, a food bank, an animal shelter, an elder-care home or a local clean-up.
- Donate blood if you’re eligible. A single donation can help patients in hospital.
- Check in on neighbours, especially older people, during heatwaves, cold spells or high-pollution days.
In the volunteering study, the health links were seen at around two hours a week. Regular, modest commitment is likely to do more for you, and for the cause, than one big gesture a year.
Don’t forget to be kind to yourself
Kindness that leaves you exhausted isn’t good for anyone. If you’re caring for a parent, a partner or a child with health needs, it’s easy to put yourself last.
- Set limits. Saying no to some requests lets you say yes properly to others.
- Ask for and accept help. It gives others the chance to be kind too.
- Protect the basics: sleep, regular meals, movement and time with friends. Our guide to improving sleep quality can help.
- Talk to yourself as you would a friend. Harsh self-criticism rarely helps you change; a kinder inner voice often does.
- Take a few minutes to breathe. These breathing exercises can help on stressful days.
If you’re feeling persistently low, lonely or overwhelmed, reach out to someone you trust or a professional. In India, Tele-MANAS offers free mental health support on 14416 or 1-800-891-4416.
The bottom line
Kindness won’t cure illness or transform your life overnight, and the research is honest about that. But small, regular acts of kindness are linked to a modest lift in wellbeing, volunteering is linked to healthier ageing, and the connections that kindness builds protect against loneliness, one of the biggest and most overlooked health risks of our time. This World Kindness Day, pick one small act today, one person to check in on this week, and one way to be a little kinder to yourself.
Pro Tip: Try a “one kind act a day” challenge this week, and use the GOQii App to keep an eye on your sleep, activity and mood as you go. Your GOQii Personalised Health Coach can help you build habits that support your mental wellbeing, from staying connected to managing stress.
Frequently asked questions
Is being kind good for your health?
Research links kindness and helping others to better wellbeing, and volunteering to healthier ageing and a lower risk of early death in older adults. The effects are modest and most studies show links rather than proof of cause, but kindness is a low-cost, low-risk habit that strengthens social connection, which protects health.
Does kindness make you happier?
Yes, modestly. A 2018 meta-analysis of 27 studies involving more than 4,000 people, led by researchers at the University of Oxford, found that performing acts of kindness has a small-to-medium positive effect on the wellbeing of the person being kind.
What are the health benefits of volunteering?
In a study of nearly 13,000 adults over 50, people who volunteered about two hours a week had a lower risk of dying over four years and were more physically active, more optimistic and less lonely than non-volunteers. The study found no clear effect on chronic conditions such as diabetes or heart disease.
Can kindness lower blood pressure?
One small study found that adults with high blood pressure who spent money on others over six weeks saw their blood pressure fall. The evidence is limited, and kindness doesn’t replace blood pressure medicine, a healthy diet or exercise.
How much volunteering is good for you?
The health links in research have been seen at around 100 hours a year, or about two hours a week. Regular, modest commitment seems to matter more than occasional big efforts.
What are simple acts of kindness I can do every day?
Call someone who lives alone, give a genuine compliment, listen without checking your phone, share a meal, help a neighbour with errands, or thank the people who serve you every day.
Why is self-kindness important?
Helping others shouldn’t come at the cost of your own health. Setting limits, accepting help, protecting your sleep and speaking to yourself kindly help prevent burnout, especially for carers.
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Disclaimer: The information provided in this blog is for general awareness and educational purposes only. It is not intended to replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for personalised medical guidance or concerns related to your health.
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