Study: Money, Mental Health Strongly Related

A Gallup study reports that there is a strong relationship between income and mental health:

While the substantial majority of Americans rate their mental health today as excellent or good, there are significant variations in this self-reported mental health measure by one's socioeconomic position. Those with higher incomes are much more likely than those with lower incomes to report excellent mental health, and this relationship persists even when other variables such as age, education, gender, and marital status are taken into account.