States that in developed countries since 1950, death rates among octogenarians, nonagenarians, and even centenarians have been reduced substantially. This title

Old-age survival has considerably improved in the second half of the twentieth century. Why has such a substantial extension of human lifespan occurred? How lon

In 1950 men and women in the United States had a combined life expectancy of 68.9 years, the 12th highest life expectancy at birth in the world. Today, life exp

A full understanding of the developmental process in individuals requires contributions from disciplines including developmental biology and psychology, physiol

Social differences in health and mortality constitute a persistent finding in epidemiological, demographic, and sociological research. It is a topic that is muc