Social Health: Why relationships might be the most powerful medicine

You already know to care for your body and mind, but what about your social health? We all understand the importance of exercising, eating well, and protecting our mental health. But there’s another, often-overlooked dimension that’s just as vital: social health.

Social health is our ability to form meaningful relationships and interact comfortably with others. It’s the strength and quality of our connections and how supported and connected we feel in daily life.

If that sounds new, it’s because it’s still an emerging concept. Yet research shows that social health – the well-being that comes from connection – is as essential as food and water. The problem? It’s still vastly underappreciated.

A personal story about connection

In an inspiring TEDx talk, social scientist Kasley Killam shared a story that makes this idea come alive.

She told the story of “Maya,” a woman who went through a whirlwind of change – getting married, moving to a new city, starting a remote job, and caring for her father with dementia.

Despite doing everything right for her body and mind – exercising, eating well, going to therapy – Maya still felt lonely and unfulfilled. It wasn’t until she began building new connections in her community, reaching out to neighbors and old friends, that she truly began to feel healthy again.

Then came the twist: Maya was Kasley herself. Her story revealed a profound truth; that nurturing relationships isn’t just emotionally rewarding, it’s essential for physical and mental health too.

Just like our muscles weaken without exercise, our social well-being deteriorates without meaningful connection, 

…Kasley explained.

A third pillar of health

Kasley’s story highlights a major blind spot in how we think about well-being. We focus on physical health – our bodies – and mental health – our minds – but we often ignore the third, equally vital pillar: social health. And neglecting this area is taking a toll.

The alarming cost of disconnection

Around the world, one in four people feel lonely, and one in five say they have no one to turn to for support. That means one in five people you pass on the street might feel completely alone.

Loneliness isn’t just sad, it’s dangerous. Research shows that chronic disconnection triggers stress, weakens the immune system, and raises the risk of heart disease, stroke, diabetes, dementia, depression, and even early death.

The Stanford Lifestyle Medicine Program found that loneliness increases the risk of heart disease by 29%, dementia by 50%, depression by 77%, premature mortality by 29%, and diabetes by 49%.

“When we feel like we don’t belong, our bodies respond as though our survival is at risk,” says Steven Crane, MS, Head of the Social Engagement Pillar at Stanford Lifestyle Medicine. Humans evolved to depend on one another. Isolation, therefore, acts as a biological stressor – one our modern lives have quietly normalized.

A widespread misunderstanding

Despite the evidence, most people underestimate how much relationships affect their health.

A 2018 study across the US and UK revealed that people consistently undervalue social connection. While they recognized the impact of smoking, exercise, and diet, they ranked social support and belonging far lower — especially men, younger participants, and those with less education.

In reality, social integration and support were found to be the two strongest predictors of mortality risk. Yet nearly 80% of those who feel lonely or isolated don’t consider their disconnection a serious health concern.

In short: social health is essential for longevity  and it matters at every stage of life.

What does it mean to be socially healthy?

Being socially healthy doesn’t mean being extroverted or constantly surrounded by people. It means having the right quantity and quality of relationships; connections that bring a sense of belonging, support, and authenticity.

Signs of strong social health:

• Balancing social and personal time
• Feeling comfortable being yourself
• Engaging with your community
• Having assertive, respectful communication
• Maintaining friendships and networks
• Creating healthy boundaries
• Having a supportive circle of family and friends
• Enjoying shared experiences and having fun

The 5-3-1 Guideline

To help people strengthen their social well-being, Kasley Killam created a simple, research-backed framework, the 5-3-1 guideline:

#1 Connect with five different people each week.
Variety matters. Research shows that even casual interactions — smiling at a barista or chatting with a neighbor — boost happiness and belonging.

#2 Strengthen at least three close relationships.
Make a “to-love” list of the people who matter most to you. Spend time together, show interest in their lives, and share your own. Face-to-face is ideal, but even virtual contact counts.

#3 Spend one hour a day on meaningful connection.
Like sleep, the amount varies by person — but intentional connection is key. And if you think you’re too busy, consider this: adults in the U.S. spend over four hours a day on their phones. Swap some scrolling for a call, a note, or a coffee.

Social health at sea

The maritime industry offers a unique lens on this issue. According to the latest Seafarers Happiness Index, crew interactions – historically the highest-scoring category – have declined significantly, though they remain the strongest-performing area overall.

This drop is concerning because positive relationships among crew members have always been one of the most resilient aspects of life at sea.

To strengthen social health onboard, maritime organizations can foster belonging through team-building activities, mentorship programs, and cultural exchange. Reliable internet for family contact, interpersonal skills training, and supportive leadership also make a world of difference.

By prioritizing social well-being alongside physical and mental health, the industry can enhance morale, safety, and job satisfaction for seafarers.

A more connected future

Not long ago, mental health was a taboo subject. Today, it’s openly discussed and widely supported. The same transformation can , and should, happen for social health.

When loneliness is treated as a public health issue, just as smoking once was, it will decline. That means designing cities, workplaces, and communities that make connection easier, with public spaces that bring people together and a culture that values relationships as much as resilience.

Imagine a world where social health is as mainstream and destigmatized as mental health is today.

source : safety4sea