How do income changes impact on mental health and wellbeing for working-age adults?

How do income changes impact on mental health and wellbeing for working-age adults? A systematic review and meta-analysis, in The Lancet Public Health

key takeaway: "Income changes probably impact mental health, particularly where they move individuals out of poverty, although effect sizes are modest and certainty low. Effects are larger for wellbeing outcomes, and potentially for income losses."