Human senescence has been delayed by a decade. This finding, documented in 1994 and
bolstered since, is a fundamental discovery about the biology of human ageing, and
one with profound implications for individuals, society and the economy. Remarkably,
the rate of deterioration with age seems to be constant across individuals and over
time: it seems that death is being delayed because people are reaching old age in
better health. Research by demographers, epidemiologists and other biomedical researchers
suggests that further progress is likely to be made in advancing the frontier of survival
- and healthy survival - to even greater ages.