In the last fifty years, average overall health status has increased more or less in parallel with a much celebrated decline in mortality, attributed mostly to poverty reduction, sanitation, nutrition, housing, immunization, and improved medical care. It is becoming increasingly clear, however, that these achievements were not equally distributed. In most countries, while some social groups have benefited significantly, the situation of others has stagnated or may even have worsened. If health is a prerequisite to a person functioning as an agent, inequalities in health constitute...