Summary:
The book presents evidence that societies with more equal distribution of incomes have better health and fewer social problems than societies with greater disparities in wealth. It argues that addressing income inequality leads to a higher quality of life for all, including improvements in trust, community life, mental health, and life expectancy.
Key points:
1. Income Gap and Social Issues: The book states that societies with larger income disparities have more social problems like mental illness, drug abuse, obesity, education failures, teen births, homicides, imprisonment, and less social mobility.
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