improvements in diet that have resulted in greater life expectancy for many people
calculating the life expectancies of different social groups
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American life expectancy has increased since Social Security’s creation, and so has the number of eligible recipients.—Louis Jacobson, Austin American Statesman, 2 July 2025 In 2025, for the first time, due to falling birthrates and increasing life expectancy, working-age adults’ caring responsibilities will switch from being primarily focused on children to elderly parents.—Avivah Wittenberg-Cox, Forbes.com, 30 June 2025 The global life expectancy at birth for a woman is 76 compared with 71 for a man.—Anne Marie Chaker, Time, 18 June 2025 The overall median life expectancy from symptom onset is 30 months, according to ALS United of Greater Chicago.—Christie D’zurilla, Los Angeles Times, 16 June 2025 See All Example Sentences for life expectancy
: the number of years that an individual or group of a certain age can expect to live on the average based on experience in the past for individuals or groups of the same kind
Medical Definition
life expectancy
noun
: an expected number of years of life based on statistical probability
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