Lynch, John W., Davey Smith, George A. Kaplan, and James S. House. 2000. "Income Inequality and Mortality: Importance to Health of Individual Income, Psychosocial Environment or Material Conditions." BMJ, 320(7243): 1200-1204.
Income inequality has generally been associated with differences in health. A psychosocial interpretation of health inequalities, in terms of perceptions of relative disadvantage and the psychological consequences of inequality, raises several conceptual and empirical problems.