Why Belonging is Medicine (And What Science Says About Connection)

Belonging is a deeply human need. It’s more than being surrounded by others or part of a crowd. It’s about feeling seen, accepted, and understood for who we truly are. And it doesn’t always require big gestures—sometimes it’s just an unspoken understanding, care without question, a connection that quietly binds us.

For much of my life, I’ve felt like an outsider. But it wasn’t until I became a widow at 36, left to navigate life with a 19-month-old son, that I truly understood what the absence of belonging feels like—and how powerfully its presence can heal.

Within the first year after my husband Isamu’s passing, my toddler son and I drove to Seattle to spend a weekend with my cousins. They were celebrating a friend’s graduation from acupuncture school. Still in survival mode—juggling solo parenting responsibilities and not knowing how to ask for help—I arrived without expectations.

What I found surprised me: asking was unnecessary. Without words or requests, each cousin stepped in. One scooped my boy into his arms, another threw the diaper bag over his shoulder, yet another lifted the stroller. They relieved me of my usual burdens, allowing me the rare pleasure to just enjoy the moment.

My needs were anticipated before I could even articulate them. In that small, unspoken act of care, I felt deep kinship—a reminder that even in my brokenness, I was supported and loved. Included.

That moment reminded me that belonging doesn’t require grand statements—it’s in the unspoken understanding, the care without question, and the connection that binds us.

Before exploring how belonging affects health, it’s worth noting that contemporary social psychologists are rethinking where belonging fits in our hierarchy of needs. Increasing evidence suggests belonging may be more central than originally thought—perhaps as foundational as safety itself.

Research in psychoneuroimmunology shows that emotional stress from disconnection directly impacts our physical health. When we experience isolation or exclusion, our stress response activates, leading to higher cortisol levels. This chronic activation affects digestive health, sleep, immune function, and even skin conditions.

But the science goes deeper. Steve Cole’s pioneering research in social genomics demonstrates that lack of social connection activates gene expression related to inflammation. Social isolation triggers stress-related genes, leading to increased inflammation that contributes to cardiovascular disease, diabetes, autoimmune disorders, and most chronic health conditions.

On the flip side, belonging has the opposite effect. Cole’s work shows that social connection helps regulate the body’s stress response, reducing inflammation and promoting better health. Strong social bonds reduce the activity of inflammation-related genes, helping the immune system function more effectively.

Research by social psychologist Dr. Julianne Holt-Lunstad reveals that lack of social connection is as significant a risk factor for early death as smoking 15 cigarettes a day. The absence of connection is associated with increased inflammation, lower immune function, and even shortened telomeres—protective caps on chromosomes that play a role in aging.

A 2016 study in PNAS found that social isolation increases inflammation risk to the same extent as physical inactivity during adolescence, and in older age, its effect on hypertension exceeds the impact of diabetes.

This isn’t just about having people around—it’s about the quality of connection and whether it fosters that deep sense of being seen and accepted for who we are.

More recently, I found belonging in an unexpected place: dance class. After decades away from dance, I wasn’t looking for competition or perfection. I wanted a space where I could just be, where my body could move freely without judgment.

Without saying a word, where nobody knew my name, belonging was immediately recognizable. Every session starts with a cheer for first-time attendees and a reminder to just have fun. The crowded room includes people of all shapes, sizes, colors, and identities. Collectively, we move to choreography—individual yet unified. It’s belonging without rules of initiation other than showing up.

My friend Claire finds her deepest belonging not with people, but in the ocean:

“The first time I truly felt like I belonged, there were no people around. I was alone in the deep ocean, held by saltwater, surrounded by a pod of spinner dolphins. Far from the debilitating physical pains that kept me grounded on land, I was free. These creatures made me feel at home, alive, and welcome. None cared what I was wearing, how successful I was, or whether I was clever. I didn’t have to do anything at all. I was enough simply as I was.”

Whether through intimate friendships, creative communities, nature, or solitude—belonging takes many forms. The key is finding spaces where we can show up as ourselves without fear of judgment.

From a health perspective, belonging functions as an essential nutrient. When we experience genuine connection, our bodies produce lower cortisol levels, release oxytocin (the bonding hormone), and activate dopamine and endorphin production. These aren’t just feel-good responses—they support immune function, heart health, and cognitive resilience.

The Blue Zones research, despite recent debates about data accuracy, confirms one undeniable factor: deep community ties contribute to longevity. In these cultures, elders aren’t seen as burdens but as active contributors whose wisdom is valued. This sense of belonging—where people are respected and actively included—contributes to both lifespan and healthspan.

True healing goes beyond addressing physical dysfunction. It’s about understanding the stories we carry and the connections we make with ourselves and others. When we create space for our narratives—whether of loss, triumph, or transformation—we not only connect more deeply with others but strengthen our relationship with ourselves.

Belonging is a bridge between various realms of healing, reminding us that we don’t just survive in community—we thrive in it.

The complete exploration of belonging as medicine, including the full science behind social genomics and psychoneuroimmunology, frameworks for cultivating connection in chronic illness, and practical tools for building authentic community, is in my comprehensive essay: Read: “The Medicine in Belonging”