Cohort life expectancy
\ˈkoʊhɔrt\ \laɪf\ \ɪkˈspɛktənsi\
The average number of years a person is expected to live, based on their year of birth, and taking into account expected future improvements in health and mortality.
Unlike period life expectancy, which uses death rates from a single point in time, cohort life expectancy assumes that medical advances, healthier lifestyles, and other factors will continue to improve (or degrade) longevity over a person’s lifetime.
For example, someone born in 1990 is expected to live longer than someone born in 1950, because they are likely to benefit from better healthcare and living conditions throughout their life.