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Knowledge4Policy
KNOWLEDGE FOR POLICY

Supporting policy with scientific evidence

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Glossary item | Last updated: 03 Feb 2021

Life expectancy at birth

'The average number of years that a newborn could expect to live if he or she were to pass through life exposed to the sex- and age-specific death rates prevailing at the time of his or her birth, for a specific year, in a given country, territory or geographical area.'