Dan Buettner, an expert on longevity: “I don’t make money by saying this”

Friendship is not only a source of emotional support and psychological wellbeing, but also a key factor in living longer and better. That is the conclusion of international organizations and longevity experts, who warn that a lack of stable social relationships has a direct, measurable impact on health and life expectancy.

The World Health Organization (WHO) stresses that social interaction acts as a genuine health shield throughout every stage of life. According to the organization, maintaining bonds with others “can reduce inflammation, lower the risk of serious health problems, support mental health and prevent premature death.” By contrast, a lack of human contact is associated with a higher risk of stroke, diabetes and cognitive decline.

The consequences are not limited to physical health. The WHO warns that “lonely people are twice as likely to develop depression,” and multiple studies have linked persistent loneliness to severe anxiety and thoughts of self-harm, making it a major risk factor for mental health.

Friendship as a driver of longevity

Along these lines, science communicator and longevity expert Dan Buettner, known for his research into the so-called Blue Zones – regions of the world with the highest life expectancy – highlights the importance of social ties. “People who feel lonely, who don’t have regular social interaction, or at least don’t feel that they do, die about eight years earlier than people who have at least two or three friends they can rely on,” he says.

Buettner emphasizes that loneliness is not irreversible and suggests simple strategies to counter it, such as proactively calling a friend, going to places where meeting new people is likely or volunteering. In his view, the need for connection is deeply evolutionary: “Our species evolved by cooperating with one another,” which is why social interaction is as essential – and as rewarding – as other basic survival behaviors.

How to build and sustain bonds in adulthood

While making friends in childhood often comes naturally, the process becomes more complicated in adulthood. Work commitments, family responsibilities and major life changes can make it harder to maintain relationships. Experts at the Mayo Clinic note that feeling disconnected at certain stages of life is normal, but recommend taking action to prevent that feeling from becoming entrenched.

As Buettner himself puts it, “I don’t make money saying this,” but he knows his words can help someone. Among the most practical recommendations are reconnecting with old friends, staying in touch with former coworkers or classmates, taking part in cultural activities and taking the first step toward meeting new people. A positive attitude, experts conclude, is key to helping relationships flourish – and with them, a longer and healthier life.

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