The Roseto Effect shows the extreme power of good relationships for health and wellness

In the 60s, the town of Rosteo, Pennsylvania has statistically significantly fewer heart attacks and heart disease than surrounding towns that on their surface looked identical. The odds were against them; they worked difficult blue-collar jobs, ate fatty foods, and even smoked cigars. The one difference: Roseto was founded by recent Italian immigrants, and they embraced their old tight-knit community ways of living life. Evidence from the Roseto Effect is clear—if you have unconditional love and belonging in a tribe, practically every other lifestyle choice you make is a rounding error to your health, happiness, and longevity.

https://www.youtube.com/watch?v=MnbPzXDco90