Does Social Connection Affect Longevity? Evidence on Loneliness, Migration, and Lifespan

Why belonging may become a strategic variable in healthy aging

Longevity is often framed through medicine, nutrition, diagnostics, and lifestyle optimisation. Yet one of the most consistently supported predictors of healthspan and lifespan lies in a different category: social connection.

This is no longer a marginal insight. According to the WHO Commission on Social Connection, 1 in 6 people worldwide experience loneliness, and loneliness is linked to more than 871,000 deaths annually. WHO further identifies social isolation and loneliness as significant risk factors for mortality, cardiovascular disease, type 2 diabetes, depression, and anxiety. In other words, social connection is not simply a quality-of-life issue. It is a public-health issue with direct relevance to longevity.

The relationship between social ties and survival has been supported for years in population research. A widely cited meta-analysis published in PLoS Medicine found that individuals with stronger social relationships had a 50% greater likelihood of survival than those with weaker social ties. Subsequent meta-analytic work found that both objective social isolation and subjective loneliness were associated with increased risk of early mortality. These findings place social connection alongside more familiar longevity variables such as smoking, inactivity, and metabolic risk.

For the longevity field, this matters in a new way because the social landscape itself is changing. Migration, forced displacement, transnational family structures, and multi-country living are reshaping how people form and maintain relationships across the life course. UNHCR reported 122.1 million forcibly displaced people by the end of April 2025, a figure that underscores the scale at which social continuity is being disrupted globally. In parallel, the OECD’s International Migration Outlook 2024 points to sustained migration flows and growing policy attention to integration, identity, belonging, and anti-discrimination in host societies.

From a longevity perspective, migration should not be understood solely as geographic movement. It is also a shift in social structure, health access, and psychological security. WHO explicitly links migrant and refugee health outcomes to the social determinants of health in host communities, including housing, income, employment, education, language, and discrimination. WHO also reports that mental health conditions such as depression, anxiety, PTSD, and suicide are more prevalent among refugees and migrants than among host populations in many settings, often because of cumulative social disadvantages before, during, and after migration.

This is particularly relevant in later life. Older adults are already more vulnerable to the health effects of loneliness and isolation due to retirement, bereavement, mobility limitations, and shrinking networks. The National Institute on Aging notes that loneliness and social isolation are associated with higher risks of heart disease, depression, cognitive decline, and Alzheimer’s disease. The National Acadeamies similarly identify social isolation and loneliness as serious public-health risks for older adults. WHO estimates that around 1 in 10 older people experience loneliness and 1 in 4 are socially isolated.

Once migration, displacement, or multi-country living enters the picture, these risks may intensify. Language barriers, loss of familiar social codes, fractured families, uncertain legal status, and weak community integration can reduce both access to care and the informal support that sustains healthy aging. OECD work on the social integration of immigrants emphasises that non-economic dimensions of integration — identity, sense of belonging, intergroup interactions, discrimination, and civic participation — are central to social cohesion. These are not peripheral matters. They shape whether individuals remain socially connected enough to sustain health over time.

This is where the concept of glocalization becomes useful. In practical terms, more people now live “globally” while trying to remain rooted “locally.” They may work across regions, age away from their country of origin, raise children in multilingual environments, or move between cultural systems without fully belonging to one. For the longevity sector, this creates a new operational reality: patients may be clinically stable but socially fragmented. They may have access to excellent diagnostics yet lack continuity of community, culturally competent care, or durable relationship networks.

A serious longevity model therefore cannot focus only on the body in isolation. It must also ask whether the person is embedded in a social environment that supports healthy aging. This includes culturally intelligent communication, continuity of care across borders, community-based engagement, family inclusion where appropriate, and clinic models that recognise belonging as part of long-term health management.

For operators, this has strategic consequences. Clinics serving migrant, expatriate, or internationally mobile populations may need to think beyond treatment pathways and incorporate social-health considerations into program design. For investors, it suggests that the next generation of longevity businesses will be judged not only by their technologies and protocols, but by how well they respond to social fragmentation, cultural plurality, and mobile lives. For institutions, it raises a broader question: whether healthy aging can be sustained at scale without stronger systems of social inclusion.

At WAAA, this is not viewed as an auxiliary topic. Social connection, especially under conditions of migration and displacement, belongs within the broader architecture of longevity. If long life is the goal, then belonging, continuity, and culturally adaptive care must be considered part of the infrastructure that makes it possible.

A longer life is now measured in whether years lived remain socially held.