[Edited to add information on Bolivian supercentenarian and link to Helmuth's article.]
It's impossible to know precisely how long you will live. Nevertheless, many seek information on life expectancy so that they can manage their resources.
122 = The maximum human life span.
85 = The average life expectancy for women
in the US who reach age 65.
82 = The average life expectancy for men in the US who reach age 65.
77 = The average life expectancy for those in the US
measured from birth.
First, it's important to know the difference between
life span and
life expectancy.
Life span is the maximum number of years that a species can live. It's the upper limit. For humans, this is 122 years. Jean Calment holds
the record for the oldest documented living person. She lived for 122 years and 164 days. There is some buzz about a
man in Bolivia exceeding that record by reaching age 123, but Guinness hasn't verified his documentation yet.
Life expectancy is the statistically expected number of years projected for a person's length of life.