How Trust Influences Well-Being and Longevity, According to a Massive New Study

Have you ever noticed how some people just seem lighter than others?

Not in a carefree, oblivious way – but in how they move through the world without constantly checking over their shoulder. They ask for help without worrying they’ll look weak. They laugh more easily. They assume the barista didn’t mean anything by getting their order slightly wrong. They don’t go through life expecting to be disappointed.

Scientists Analyzed Millions of People - and Found the Personality Trait That Quietly Adds Years to Your Life

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Whenever I meet people like this – on trips abroad, in cafés, even during work projects – I catch myself thinking, They must sleep better at night than the rest of us.

And according to new research, they just might live longer too.

It turns out this gentle ease in the world, this quiet belief that people are mostly decent and that institutions usually work as intended, has a name: trust.

And while it may not get as much attention as diet trends or workout plans, scientists are now showing that trust might be one of the most underrated contributors to long-term well-being.

Not blind trust. Not naïve trust.

Just a grounded, hopeful, better-than-neutral expectation that the world isn’t out to get you.

Recently, a huge scientific study shed new light on this idea – in a way that’s surprisingly relatable to everyday life.

And that’s what this article is about: the fascinating link between trust, well-being, and potentially even longevity, plus what you can realistically do about it.

What the New Research Says

how trust influences well-being. does trust affect longevity

In 2025, a major meta-analysis was published in Psychological Bulletin by Shanshan Bi, Marlies Maes and collaborators. The title is long – “Trust and Subjective Well-Being Across the Lifespan: A Multilevel Meta-Analysis of Cross-Sectional and Longitudinal Associations” – but what matters is what they found.

This wasn’t a tiny psychology experiment done on 42 students in a lab.

They reviewed:

  • 991 effect sizes
  • 2,518,769 participants
  • Ages between 6 and 84
  • Dozens of countries

What they discovered (an abstract is here) is both simple and profound:

People who trust more – whether it’s trust in others, trust in strangers, or trust in institutions – consistently experience higher well-being.

Not just momentary happiness.

But long-term life satisfaction, emotional stability, and overall psychological comfort.

And this was true across cultures, age groups, and different economic contexts.

Even more interesting: the longitudinal data showed something like a loop.

People who trust tend to feel better emotionally over time. And people who feel better emotionally tend to trust more.

A reinforcing cycle.

You’ve probably felt this in your own life: the more stable and content you feel internally, the more open you are. And when your interactions with others go well, that inner steadiness grows.

The study didn’t suggest trust is the only path to happiness – of course not – but it highlighted just how powerful this trait can be, quietly shaping emotional well-being across years, not days.

Why Researchers Think Trust Might Influence Health and Longevity Too

study with 2.5 million participants on trust and well-being

The trust–well-being connection is the first part.

The second part comes from decades of prior research showing how well-being affects health.

A key paper here is from Ed Diener and Micaela Chan: “Happy People Live Longer: Subjective Well-Being Contributes to Health and Longevity”.

This influential review pulled together multiple types of evidence. Their findings showed that people who experience stable satisfaction, optimism, positive emotions, and low chronic stress tend to:

  • have stronger immune responses
  • show lower cardiovascular risk
  • live longer, sometimes significantly longer
  • age more slowly in terms of physical functioning

Not because they never get sick or because they meditate every morning, but because positive emotional states help the body maintain balance. Stress hormones decrease. Inflammation drops. Health behaviors improve naturally.

This doesn’t mean “be happy, and you’ll live to 105.”

It means well-being is a legitimate, measurable contributor to longevity, like exercise and sleep.

Now, if trust boosts well-being… and well-being supports health… you can start to see why researchers are paying attention.

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The chain isn’t magical or mystical. It’s psychological and behavioral. 

Trust reduces daily stress. Reduced stress improves mood. Improved mood supports better physical health.

And healthier people – unsurprisingly – tend to live longer.

What Makes Trust So Emotionally Powerful?

Trust is one of those traits we barely notice when we have it, but we really feel it when it’s missing.

Imagine two different mornings.

In one version, you wake up and your mind already expects that your boss will criticize you, that the city will be chaotic, that people might try to take advantage of you, that institutions are failing, that nothing really works.

In the other version, your mind expects the day to go reasonably well. People are human and imperfect, but generally good. Systems aren’t flawless, but they’re functional. You’ll handle whatever comes up.

These two mindsets create two entirely different stress environments inside your body.

Trust acts like a quiet buffer against daily friction. It softens the edges of interactions. It reduces vigilance and tension. It makes room for small joys.

You can practically feel your shoulders lowering when you’re around someone you trust. Your heartbeat steadies. Your breath slows.

Now imagine living your entire life with that difference.

It’s not hard to see how this could translate into long-term emotional and physical benefits.

Trust Is Also Social – And That Makes It Even More Interesting

Something I personally find fascinating about trust is that it’s not just an internal psychological trait. It’s shaped by:

  • your family environment
  • your friendships
  • your community
  • your country’s institutions
  • the media you consume
  • the social norms around you

Another 2025 study – by Zheng et al., published in BMC Psychology – looked across 80 societies. They found that interpersonal trust (both toward people we know and toward society at large) is consistently associated with higher subjective well-being.

But – and this is important – the strength of that association varies by culture. In societies where general trust is common, the effect is stronger. Where trust is scarce or where institutions are less reliable, the effect is muted.

So if you grew up in a mistrustful environment, it’s not your fault. You didn’t “fail” at trust. Your brain adapted to what it experienced.

But that doesn’t mean trust can’t be cultivated.

It can.

Gently. Gradually. With safety and boundaries.

Let’s Also Talk About What Trust Is Not

It’s very easy to misread this whole idea and think:

“So I should just trust everyone? No thanks.”

But that’s not the message of the research.

Trust, as psychologists study it, is not about:

  • ignoring red flags
  • assuming all people are angels
  • sharing your personal details with strangers
  • being naïve, passive, or vulnerable

Healthy trust is a balanced expectation of goodwill, supported by awareness, boundaries, and common sense.

It’s closer to: “Most people aren’t trying to harm me, and I’ll give them a fair chance, but I’ll still listen to my gut.”

This kind of trust is protective, not risky.

It’s strength, not fragility.

So… Can You Become More Trusting?

how to trust people more without being naive

Yes – but it’s less like flipping a switch and more like strengthening a muscle you haven’t used in a while.

Here are a few gentle starting points, written in a more human way than a step-by-step self-help list.

You can begin by noticing when your mind automatically jumps to suspicion.

Maybe when someone replies late. Or when you hear a piece of news. Or when you think of institutions. Just noticing the reaction is a big first step.

Then, try letting in the possibility – not certainty – that things may be better than you assume. Not wonderfully perfect, just slightly better.

Maybe the person was busy. Maybe the institution is flawed, but still functioning. Maybe the stranger meant well.

You can also lean a little more on people you already trust. Ask for a small favor. Let someone else handle something minor. Notice how it feels when the world doesn’t collapse.

And if trust is difficult because of past experiences, start tiny. Start safe. Start where there is already familiarity.

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Cultivating trust is not about forcing positivity. It’s about easing into a softer posture toward the world – one that research suggests is emotionally and physically healthier.

A Little Story – Because Trust Often Shows Up in the Smallest Places

During one of my trips, I once found myself at a train station in a new city, slightly lost, slightly tired, and slightly overwhelmed — a dangerous combination. I was fumbling with maps and apps, trying to figure out which platform I needed – and trust me, the first time in Paris may be confusing.

A local woman walked by and paused. “Are you okay? Need help?”

Normally, I’m the type who politely says “No, thank you, I’m fine,” even when I’m clearly not fine. Years of self-reliance will do that. But something about her warmth made me say yes. She walked me to the right track, made sure I boarded correctly, and disappeared into the crowd.

Nothing dramatic. But that tiny moment made me feel more rooted in the world. More connected.

And as I’ve learned from these studies, these moments aren’t trivial. They are micro-doses of trust – the kind that support emotional steadiness long-term.

Trust doesn’t always enter your life like fireworks.

Sometimes it arrives as a stranger pointing you to the right train.

Where Trust Fits Among All the Other Wellness Trends

Every year, wellness trends seem to pile up: cold plunges, protein targets, sleep hygiene routines, supplements, biohacking chores.

And while many of those things matter, the truth is that some of the most impactful changes are also the simplest – and the cheapest.

Trust isn’t marketed the same way. You won’t find it in a bottle.

No influencer can sell it to you.

But according to the data, trust might quietly do more for your long-term emotional health than half the things we obsess about.

I don’t think trust replaces diet or exercise, or sleep. Those are non-negotiable. But trust seems to work in parallel – supporting your emotional landscape so your body can rest, repair, and thrive.

It’s not dramatic, but it is powerful.

The Gentle Power of Trust

scientific evidence about trust and happiness

If there’s one thing I hope you take from this article, it’s that trust isn’t a personality flaw or a vulnerability – it’s a strength. And it’s a strength that science is finally beginning to understand.

The 2025 meta-analysis doesn’t claim that trust guarantees a longer life. The Diener & Chan review doesn’t claim happiness cures disease. The cross-society studies don’t say trust is easy or universal.

But collectively, this research tells a compelling story:

Trust → Less stress → More well-being → Better health → A potentially longer, more joyful life.

Not because the world suddenly becomes perfect, but because you meet it with a posture that’s calmer, kinder, and more open.

If you’re someone who already trusts easily, that trait may be one of your hidden superpowers. If you’re someone who finds trust difficult – it’s okay, and it’s not irreversible.

You can grow trust the way you grow comfort in a new city you visit repeatedly.

Slowly. With time. With small positive experiences.

And those tiny moments of trust – offering help, accepting help, believing the best until proven otherwise – might quietly add something meaningful to your life.

Years? Maybe.
Depth? Almost certainly.

I recently presented to you on this site some studies with different recommendations of EASY things to do to live happily and long:

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Frequently Asked Questions About Trust, Well-Being, and Longevity

1. How does trust influence well-being?

Trust shapes how we move through the world. When you believe most people are generally reliable and life is not constantly working against you, your stress levels drop. This creates more emotional space for calm, happiness, and meaningful relationships. Several large studies – including a major 2025 meta-analysis – show that people with higher levels of trust tend to report greater life satisfaction and overall well-being.

2. Can being more trusting really help you live longer?

While trust isn’t a magic life extender, research suggests that it can indirectly support longevity. Trust reduces chronic stress, strengthens social bonds, and contributes to emotional stability – all of which are linked to better long-term health. Scientists studying millions of participants found a consistent connection between trust, well-being, and healthier aging.

3. Is trust something you can learn later in life?

Yes. Trust isn’t fixed – it grows through small, positive experiences. You can start with low-risk interactions, build stronger relationships, and pay attention to moments that reinforce safety and connection. Over time, this gentle shift can improve both emotional well-being and how you relate to the world around you.

4. What did the new study reveal about trust and well-being?

The 2025 Psychological Bulletin meta-analysis reviewed data from over 2.5 million people across different ages and cultures. It found that all forms of trust – toward people, strangers, and institutions – were consistently linked with higher subjective well-being. Interestingly, the relationship worked both ways: trusting more predicted feeling better later, and feeling better predicted greater trust over time.

5. Why do trusting people often seem happier?

Trusting people tend to experience fewer daily stress triggers. They interpret minor setbacks with more generosity, and they feel more supported in their relationships. This ease makes room for positive emotions, better communication, and a sense of stability — all core ingredients of emotional well-being. 

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