For at least 40 years, research evidence has been accumulating that societies with bigger income differences between rich and poor tend to have worse health and higher homicide rates. More recently, this has been contextualised by observations that more unequal societies not only suffer higher rates of poor health and violence, but also of other outcomes which tend to be worse lower down the social ladder – including teenage births, lower maths and literacy scores, obesity and imprisonment. (1)
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