People whose family income was less than $5,000 in 1980 could expect to live about 25 percent fewer years than people whose family income was greater than $50,000. We explore this finding using both individual data and a panel of aggregate birth cohorts observed from 1975 to 1995. We assume that...

Disease has traveled with goods and people since the earliest times. Armed globalization spread disease, to the extent of eliminating entire populations. The geography of disease shaped patterns of colonization and industrialization throughout the now poor world. Many see related threats to...

During 2006, the Gallup Organization conducted a World Poll that used an identical questionnaire for national samples of adults from 132 countries. I analyze the data on life satisfaction (happiness) and on health satisfaction and look at their relationships with national income, age, and...

People in poor countries live shorter lives than people in rich countries so that, if we scale income by some index of health, there is more inequality in the world than if we consider income alone. Such international inequalities in life expectancy decreased for many years after 1945, and the...

I explore the connection between income inequality and health in both poor and rich countries. I discuss a range of mechanisms, including nonlinear income effects, credit restrictions, nutritional traps, public goods provision, and relative deprivation. I review the evidence on the effects of...

What is inequality in health? Are economists' standard tools for measuring income inequality relevant or useful for measuring it? Does income protect health and does income inequality endanger it? I discuss two different concepts of health inequality and relate each of them to the literature on...