Understanding Loneliness

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Loneliness is a felt gap between the connection we want and what we have, not how many people we know.

Seven theories, from attachment to evolution, frame loneliness as a signal, an absence, or lost belonging.

Rejection sensitivity, low trust, and negative self-evaluation can make disconnection self-reinforcing.

AI may drive a K-shaped split: some retreat into AI companionship, while others seek human connection.

We are reminded daily of the terrible harms loneliness can inflict on the human mind, body, and brain—and on the very texture of the social fabric (Holt-Lunstad, 2024; World Health Organization, 2025). Large language models, which are mind-like and designed to capitalize on human tendencies toward communication and relationship in order to drive use, and revenue, may offer companionship to people who need company.

At the same time that AI may assuage loneliness—and, used with intention, help bring people together—contemporary use is not so safeguarded, running the risk of damaging the “connective tissue” that holds humanity together. That connective tissue is already under strain from social media, the aftermath of pandemic-related isolation (especially for developing minds and communities), geopolitical upheaval and intergroup conflict, and the sheer mass of a humanity now exceeding 8 billion souls. From an individual perspective, each of us is a smaller and smaller fraction of the whole.

Understanding how social connection works helps us develop effective ways of combatting loneliness and building connection. One example is social prescribing, pioneered at London’s Bromley by Bow Centre beginning in 1984, in which clinicians refer people to “link workers” who connect them with non-clinical community resources—arts and nature groups, exercise, volunteering, housing and employment support. England’s National Health Service adopted the model nationally in 2019 (Chikwira, 2026).

Loneliness is a multidimensional experience: an imbalance between the people we want to connect with and those who are available, or perceived to be available. A recent review in the Journal of Social Patterns & Perspectives (Hoque, 2026) synthesizes this literature, identifying seven theoretical perspectives, six psychological mechanisms, and six features of today’s social environment.

Seven Perspectives on Loneliness and Connectedness

The multidimensional........

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