It is now clear that economic, and social variables -- more than individual behaviour -- are the most salient factors in determining people's well-being. Things like working and living conditions, the distribution of wealth, and where we live are, "the primary factors that shape the health of Canadians" (CCPA Monitor, June 2010).
For instance, almost everything that is vital to a healthy community, from life expectancy to levels of depression to crime rates, is affected by inequality. This is true in both rich and poor countries. (The Spirit Level: Why Equality is Better for Everyone, Wilkinson and Pickett).