AI-generated image of people enjoying good social relationships
Author profile picture

Harvard University’s groundbreaking longitudinal happiness study, ongoing since 1938, reveals that social relationships play a more significant role in predicting long-term health and happiness than genetics, social class, or education. Led by Robert Waldinger, the study has grown to include thousands of participants, uncovering that close ties help delay mental and physical decline, with relationship satisfaction being a better indicator of aging than middle-aged cholesterol levels.

Furthermore, individuals with a strong sense of community exhibit better memory function, while loneliness can negatively impact health as severely as smoking or alcoholism. To foster happiness and longevity, prioritizing warm relationships and engaging in community groups can significantly impact one’s sense of belonging and togetherness.

From Humble Beginnings to Global Impact

The Harvard Study of Adult Development, originally focusing on 268 Harvard sophomores during the Great Depression, has grown to encompass thousands of participants worldwide, including their spouses, children, and future generations [1]. The study has had four directors, with Robert Waldinger now leading the research as a psychiatrist at Massachusetts General Hospital and a professor of psychiatry at Harvard Medical School [1]. The study’s funding came from the National Institute of Mental Health and later the National Institute on Aging.

Participants’ health trajectories serve as the main data collected, but researchers also explore their broader lives, such as career achievements, marriages, friendships, and more [1]. The study’s primary objective is to understand the role of happiness in achieving a long life and how people age differently.

Positive Relationships: The Key to a Long, Happy Life

The research emphasizes the importance of “social fitness”, which involves assessing connections and devoting time to relationships that foster well-being [2]. The study found that close ties contribute more to happiness than money, fame, social class, IQ, and genetics [1].

Seven keystones of support in relationships have been identified: safety and security, learning and growth, emotional closeness and confiding, identity affirmation and shared experience, romantic intimacy, help (informational and practical), and fun and relaxation [2]. These factors can be used to evaluate relationships and prioritize connections that truly matter. Dr. Waldinger, in his book ‘The Good Life’, advises people to reach out and deepen connections that are beneficial to one’s happiness and well-being [3].

Combatting Loneliness and Fostering Community

Loneliness has been on the rise since the 1950s, coinciding with technological advancements [3]. Half of the CEOs report feeling lonely, which is a predictor of poor health, equivalent to smoking half a pack of cigarettes daily, high blood pressure, or obesity [3]. To counteract loneliness, Dr. Waldinger recommends giving undivided attention to others and being intentional in structuring lives to reduce social isolation [3].

“The best things in life aren’t things”

Dr. Robert Waldinger

Community involvement is essential for fostering happiness and longevity, and platforms like Meetup offer accessible ways to connect with others who share similar interests. By joining groups or creating new ones, individuals can step out of their comfort zones and engage in social activities that nurture their sense of belonging and togetherness [1].

Embracing the Science of Happiness

While many may believe that fame and fortune lead to happiness, Dr. Waldinger’s research shows that happiness levels plateau at a $75,000 average household income [3]. Instead of focusing on money or material possessions, spending on experiences has been found to increase happiness [3]. As Dr. Waldinger explains, “The best things in life aren’t things” [3].

Ultimately, the Harvard Study of Adult Development provides scientific backing to the idea that strong connections and warm relationships are the most significant factors contributing to happiness, health, and longevity. By prioritizing relationships and engaging in community activities, individuals can actively work towards living a more fulfilling and happier life.


[1] MeetUp
[2] CNBC
[3] Harvard