It is not possible to predict exactly how long an individual will live with 100% certainty. Globally, the average life expectancy for a member of the human species born in 2020 is estimated at 70 years for males and 75 years for females). However, many individuals live well past 100 with a delayed onset or reduced severity of age-related conditions. It is not clear exactly what environmental or genetic factors are important when it comes to achieving exceptional longevity.