Fix the grammar mistakes: Opponents may say current clinical R&D cause an increase in longevity, which substantially raises the average age of the population.
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The average age of the population is 60.
The average age of the population is 60.
The average age of the population is 60.
The average age of the population is 60.
The average age of the population is 60.
The average age of the population is 60.
The average age of the population is 60.
The average age of the population is 60.
The average age of