The age pyramid of US shows very clearly that
the population over 60 years old is already
decreasing after 60 years old. This category
represents 22.7 % of the total population.
As the average age
of death is statistically about 80 years (in
the absence of preventive treatments of the
diseases of aging).
We can conclude that
22.7 % of the current population of US will be
statistically dead in the next 20 years and will
have to be replaced
in the absence of
preventive treatments for diseases of aging.
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