Inequality, then, is not just unattractive in itself; it clearly corresponds to pathological social problems that we cannot hope to address unless we attend to their underlying cause. There is a reason why infant mortality, life expectancy, criminality, the prison population, mental illness, unemployment, obesity, malnutrition, teenage pregnancy, illegal drug use, economic insecurity, personal indebtedness and anxiety are so much more marked in the US and the UK than they are in continental Europe.