The objective is to maximize life expectancy subject to society’s capacity to commit resources in light of existing or future constraints. Reducing risk of death and disease translates into longer healthful lives. The length of life extension in good health for a population can be reliably measured as the effect on the gain in life expectancy (dL).
The aim is to extend lifespan while taking into account societal resources and existing or potential constraints. Reducing mortality risk and disease translates to more people living healthy lives. The extent of life extension in good health for a population can be precisely measured as the effect on life expectancy gain (dL).