Estimates of how long people are likely to live are generated through a measure known as “cohort life expectancy,” which projects the average age of death for someone born or turning 65 in a given year. People born in 1940 had a cohort life expectancy of 73, while people born today have a cohort life expectancy of about 85, and people born in 2100 are projected to have a cohort life expectancy of 89. That means the average person born today is likely to live to be 85 and the average person in 2100 is likely to live to be 89 years old. Life expectancy is even higher for those who make it to age 65.
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