FOR NO REASON

Journal · Kindness for no reason

The Benefits of Kindness: What the Research Says (and Doesn't)

By The Chief · · 7 min read

A hand lighting paper lanterns glowing in the dark
Photo: Peter Hershey, CC0, via Wikimedia Commons

There is a lantern festival in Hội An, Vietnam, where people light small paper lanterns and set them on the river. Each lantern is tiny. Together they turn the water to gold.

Kindness works a little like that. One act seems too small to matter. But a life, or a community, made of them begins to glow.

Many articles about the benefits of kindness overpromise: Be kind and you'll live longer! Kindness makes all your stress disappear! I will not do that. Instead, let us look carefully at what the research suggests, where it is strong, and where it is still uncertain.

1. Kindness tends to lift the giver's mood

The clearest evidence is about well-being. A meta-analysis that pooled experiments asking people to perform acts of kindness found a small-to-medium positive effect on the giver's well-being (Curry et al., 2018). The authors were careful to note the effect was modest and that more research was needed, but the direction was consistent.

One of the best-known experiments came from Elizabeth Dunn and colleagues. People were given a small sum of money ($5 or $20) and randomly told to spend it either on themselves or on someone else. By the end of the day, those who spent it on others reported greater happiness, and the amount did not seem to matter much (Dunn, Aknin & Norton, 2008).

Later work found similar links between giving and well-being in many countries, rich and poor (Aknin et al., 2013). Kindness and happiness seem to share a road, across cultures.

2. It means more to the recipient than you think

We tend to judge our own kind acts as small. Recipients often see them differently. In experiments by Amit Kumar and Nicholas Epley, people who did a simple kind act for someone consistently underestimated how positive the recipient felt (Kumar & Epley, 2023). Similar research found that people underestimate how much others enjoy receiving compliments, which makes us give fewer than we could (Zhao & Epley, 2021).

This may be the most practical finding of all. The kind word you are hesitating over will probably land better than you fear.

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3. Kindness builds connection

Kindness opens doors between people. A small favour starts a conversation. A thoughtful message rekindles a friendship. A welcome makes a newcomer feel they belong. Relationships themselves matter a great deal: a meta-analysis of 148 studies linked stronger social relationships with a higher likelihood of survival over the study periods (Holt-Lunstad et al., 2010).

Kindness does not guarantee friendship, but it is one of the most natural ways friendships begin.

4. Volunteering: promising, but be honest about it

Volunteering is kindness given structure. A systematic review found that volunteering was associated with lower depression, higher life satisfaction and well-being, and, in cohort studies, lower mortality. But the same review stressed that the experimental evidence was much weaker, and that healthier, happier people may simply be more likely to volunteer in the first place (Jenkinson et al., 2013).

So the honest summary is: volunteering is linked with good things, and it is a wonderful way to serve and connect. It is not a proven health treatment, and no one should promise it is.

5. It shapes who you become

This benefit is harder to measure but easy to recognise. What we repeat, we become. A person who practises kindness daily, in small, deliberate ways, slowly becomes someone who notices: who sees the struggling stranger, the lonely colleague, the tired parent. That attention is a kind of wealth. It changes how the world looks.

6. Kindness can travel

There is some evidence that generosity spreads. In a laboratory study of cooperation games, James Fowler and Nicholas Christakis found that when one person gave to the group, the people they played with tended to give more in later rounds, with new partners, and those people in turn influenced others (Fowler & Christakis, 2010). It was a game, not daily life, and the effect was modest. But it fits something many of us have felt: the morning a stranger was kind to you, you were a little kinder to the next person you met.

Think of it as a quiet chain. You may start it without ever seeing where it ends. The colleague you encouraged encourages someone else. The neighbour you helped helps another. Your lantern lights another lantern, and the river keeps carrying the light downstream.

A simple kindness week

If you want to test this for yourself, try one week:

Write one line each evening about what happened and how it felt. Notice, honestly, whether anything changes. Some weeks it will feel wonderful; some weeks, ordinary. Both are fine. You are not chasing a feeling. You are building a way of living.

What kindness is not

It is not people-pleasing. Saying yes to everything, at the cost of your own health or honesty, is not kindness. Kindness includes boundaries.

It is not a transaction. Kindness offered to get something back stops being kindness and becomes trade.

It is not a performance. Kindness filmed for applause can still help someone, but the heart of it is the act, not the audience.

How to practise kindness every day

For ideas, see our list of 50 random acts of kindness.

Your kindness task

Tomorrow, give one sincere, specific compliment to someone: not "nice job", but "the way you explained that made it finally make sense to me". Watch their face. Then write down one sentence about what happened.

Kindness is not a strategy for getting something. It is a way of being in the world that, the evidence suggests, tends to be good for those who receive it and those who give it. One lantern at a time, the river fills with light.

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Lighting a lantern with you,

The Chief

Sources

Related reading: 50 random acts of kindness ideas · How to be a kinder person · How to find a sense of belonging

Questions

What are the benefits of being kind?

Studies link kindness with higher well-being for the giver, stronger relationships and positive feelings for the recipient. Experiments found that spending on others, and doing kind acts, tended to raise happiness on average. Effects vary from person to person, and nothing is guaranteed.

Is kindness good for your health?

Some observational studies link volunteering with better mental well-being and lower mortality, but a major review noted that these studies cannot prove cause and effect. Kindness is worth doing for its own sake; it is not a medical treatment.

Why is kindness important in society?

Kindness builds trust and cooperation, helps people feel they belong, and can spread: small kind acts often lead recipients to help others. It is part of the everyday glue of community life.

Does kindness have to cost money?

No. Attention, time, a sincere compliment, patience and listening are among the most valued forms of kindness, and they are free.

General information for wellbeing, not medical, psychological or financial advice. If you are struggling, see crisis help.