The stories behind the numbers
Life expectancy in 2023: whose 73.3 years?
WHO’s Global Health Estimates put global life expectancy at birth in 2023 at 73.3 years. The figure summarizes mortality conditions in that year. It does not predict the date when a particular person will die.
According to WHO estimates, what was global life expectancy at birth in 2023?
Answer and explanation: 73.3 years
73.3 years. This applies the year’s age-specific mortality rates; it is not the average age at death.
WHO · Global Health Estimates 2000–2023Try one question
According to WHO estimates, what was global life expectancy at birth in 2023?
Reveal the answer
Answer and explanation
73.3 years
73.3 years. This applies the year’s age-specific mortality rates; it is not the average age at death.
A hypothetical lifetime
Think of a hypothetical newborn who experiences the mortality rates observed at each age in the reference year throughout life. A life table turns that pattern into an expected number of years. Actual children will grow up under changing conditions, so their eventual lifetimes need not match this period measure.
Why it is not the average age at death
Taking the ages of people who died during a year and averaging them answers a different question. That average is affected by how many young and old people are in the population. Life expectancy instead combines mortality rates at different ages. You also cannot estimate an adult’s remaining lifetime simply by subtracting their age from 73.3.
Years lived and years in good health
Life expectancy counts years of life, including years lived with illness. Healthy life expectancy is a separate indicator that accounts for health states. The global figure also does not describe every country or every person equally. When comparing data, match the reference year, age at which expectancy is measured and estimation method.
Read 73.3 years as global life expectancy at birth calculated from 2023 age-specific mortality rates, not a personal deadline or a promise of healthy years.