Answer :

believed to be around 125 years 
The maximum human lifespan, by how you define it, is currently recorded at 122 years, 165 days, held by Jeanne Calment. She lived from 21 February 1875 – 4 August 1997.

However, we have yet to define 122 years as the maximum age, since future breakthroughs in medical technology may allow people to live much longer.

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