The root cause is, I think, inequality. See, for example, https://equalitytrust.org.uk/health https://equalitytrust.org.uk/health "A much higher percentage of

The root cause is, I think, inequality. See, for example, https://equalitytrust.org.uk/health https://equalitytrust.org.uk/health "A much higher percentage of the population suffer from mental illness in more unequal countries; differences in inequality tally with more than triple the differences in the percentage of people with mental illness in different countries. Rates of depression in US states are associated with income inequality (after adjusting for income, proportion of population with a college degree and proportion over 65). The more unequal the state, the higher the prevalence of depression."